0R Zero Reformatted Data6H Band 6 - high gain 6L Band 6 - low gain 6S Second Simulation of a Satellite Signal in the Solar Spectrum

A&AA&E Access and ExplorationA&P Archive and ProductionA&P OPS Archive and Production OperationsAA Active Archive or Alternative Analysis or Associated AdministratorAAC Archive Advisory CommitteeAADP Active Archive Data PackageAAG Association of American GeographersAAOS Albers Automatic Ordering SystemAAR After Action ReportAAS Anomaly Analysis SubsystemAATHom Average Across-Track HomogeneityABML As-Built Materials ListABPL As-Built Parts ListABS AbsoluteAC Alternate Current or Archive Cache or Actual Cost

ACCA Automated Cloud Cover Assessment or Actual Cloud Cover AverageACK AcknowledgementACL Access Control ListACQ Acquired Scenes Report ACRES Australian Center for Remote Sensing ACS Attitude Control System ACSLS Automated Cartridge System Library SoftwareACTHom Average Cross-Track HomogeneityACU Antenna Control UnitACWP Actual Cost of Work PerformedA/D Analog/Digital AD Active Directory or Associate Director

ADA Angular Displacement Assembly or Attitude Displacement Assembly ADAT Application and Data Assessment

ADCADD Algorithm Description DocumentADF Ancillary Data FileADIC Advanced Digital Information CorporationADM Administrative Message ADML As-Designed Materials ListADP Ancillary Data Preprocessor

Authorization and Authentication or Archive and Access or Associate Administrator

After DC Restore or Ancillary Data Corrector or Analog-to-Digital Conversion

ADPL As-Designed Parts List

ADS ADSA Attitude Displacement Sensor Assembly ADVP Algorithm Development and Verification PlanAE Archive ElementAEA Albers Equal AreaAEM Auxiliary Electronics Module AES Advanced Encryption StandardAETD Applied Engineering and Technology DirectorateAFB United States Air Force BaseAFM Anomalous Frame ManagerAFOV Angular Field of ViewAFWA Air Force Weather AgencyAGC Automatic Gain ControlAGE Automated Ground Equipment AGS Alaska Ground Station AGU American Geophysical UnionAIM Algorithm Integration MeetingAIP Archival Information PackageAIS Automated Information SecurityAIT Algorithm Implementation TeamAJAX Asynchronous Java Script and XMLALI Advanced Land Imager ALIAS Advanced Land Image Assessment SystemAM Artifact MaskAMP Allocation Management PlannerAMTS Asset Management Tracking SystemAN Ascending Node ANC Ancillary FileANN Annotation FileANSI American National Standards Institute ANSS Advanced National Seismic SystemANTLR Another Tool for Language RecognitionAO Authorization Official or Authorizing OfficialAOI Area of Interest

AOS Acquisition of Signal or Arrival On-Site or Automated Ordering SystemAPAC Acquisition Procurement Advisory CouncilAPI Application Programming Interface APID Application IdentificationAPMC Agency Program Management CouncilAPO Accountable Property OfficerAQ Advanced QueuingAQPSK Asynchronous Quadrature Phase Shift Keying

Attitude Displacement Sensors or Angular Displacement Sensor or Archive Data Stager

AR Archive or Axial Ratio or Acceptance ReviewARB Architecture Review Board or Anomaly Review BoardARD Analysis Ready DataART Anomaly Resolution TeamAS Archive ServerASA Archive Server Application or Alice Springs [Station] AustraliaASB Administrative Services BranchASCII American Standard Code for Information Interchange ASGUI Archive Server Graphical User InterfaceASHRAE American Society of Heating, Refrigeration and Air-ConditioningASIC Application Specific Integrated Circuit ASN Alice Springs Ground Station or Australian NetworkASPRS American Society of Photogrammetry and Remote SensingASQC American Society for Quality ControlAST Active Scan Time ASTER Advanced Spaceborne Thermal Emission and ReflectionASTM American Society for Testing of MaterialsAT-ACCA Artificial Thermal Automated Cloud Cover AssessmentATBD Algorithm Theoretical Basis DocumentATCS Absolute Time Command SequenceATHom Along-Track HomogeneityATK Alliant TechsystemsATL Automated Tape LibraryATM Asynchronous Transfer ModeATO Authority to OperateATP Authority to ProceedATS Absolute Time Sequence or Automatic Transfer SwitchATT Authorization to TestAU Astronomical UnitsAUI Analyst User Interface AVHRR Advanced Very High Resolution RadiometerAVI Audio Video InterleaveAVPD Avtec Programmable DemodulatorAVT Algorithm Verification TestAWiFS Advanced Wide-Field SensorAWM Analytical Workspace ManagerB&A Billing & AccountingB1 Build 1B2B Band-to-Band B2BCal Band-to-Band CalibrationBA Billing and Accounting or Burned AreaBAC Budget at CompletionBAD Block Address DataBASIS+ Budget and Science Information System PlusBATC Ball Aerospace & Technology Corporation

BBC Black Body CalibratorBBOX Bounding BoxBC Best CaseBCD Binary-Coded Decimal BCH Bose-Chaudhuri-Hocquenghem Error Detection and Correction BCISO Bureau Chief Information Security OfficerBCR Baseline Change RequestBCWP Budgeted Cost of Work PerformedBCWS Budgeted Cost of Work ScheduledBD Band BDA Bulk Download ApplicationBER Bit Error Rate BERT Bit Error Rate TestBIA Business Impact Analysis or Business Impact AssessmentBIH Bureau International de l'HeureBIL Band Interleaved by LineBIP Band Interleaved by PixelBIP2 Band Interleaved by Pixel PairBIS Bureau of Industry and SecurityBITSM Bureau Information Technology Security ManagerBJC Beijing, Peoples Republic of China Ground StationBKT Bangkik, Thailand Ground StationBLM Bureau of Land ManagementbLMOC Backup Landsat Multi-Satellite Operations CenterBME Browser Mean Element BMO Business Management OfficeBMOC Backup Mission Operations Center BMOE Backup Mission Operations ElementBN Background NoiseBOC Budget Object ClassBOE Basis of EstimateBOM Bill of MaterialsBP Bias ParameterBPA Blanket Purchase AgreementBPAL Best Practices Asset LibraryBPDU Bitstream Protocol Data Unit BPF Bias Parameter FileBPG Bias Parameter GeneratorBPSK Biphase Shift Keying BRAA Band Registration Accuracy AssessmentBRAT Bit Rot Assessment ToolBRDF Bi-directional Reflectance Distribution FunctionBRDF-n Normalized Bi-directional Reflectance Distribution FunctionBRDF-s Spectral Bi-directional Reflectance Distribution FunctionBSP Best Security Practices

BSQ Band SequentialBSSC Bit Synchronizer / Signal ConditionerBSTAR Drag-Related Parameter in the NORAD Two-Line Element BSU Baseband Switching Unit BTC Bench Test Cooler BTF Ball Test FacilityBTI Blank Tape InterfaceBUI Bumper mode User InterfaceBUTST Bureau Unix Technical Support TeamBVR Boast Voltage RegulatorBWTST Bureau Windows Technical Support TeamC Centigrade C&DH Command and Data Handling C&A Certification and AccreditationC&T Command and TelemetryC&T DB Command and Telemetry DatabaseC0 Coefficient 0C1 Coefficient 1C2 Coefficient 2C3S NPOESS Command, Control, and Communications Segment CA Conjunction Assessment or Control Account or Cost AccountCADU Channel Access Data Unit CAGE Commercial and Government EntityCAL Calibration DataCalManWG Calibration Maneuver Working GroupCALTest Calibration/Validation TestCal/Val Calibration/Validation

CAMCAOS Collection Automatic Ordering SystemCAP Cartridge Access Port or Control Account PlanCAPE Collection Activity Planning ElementCAPERD CAPE Requirements DocumentCARA Conjunction Assessment Risk AnalysisCARD Constraints and Restrictions DocumentCASA Cloud And Cloud Shadow AssessmentCA-WAD Cost Account Work Authorization DocumentCBA Cost Benefit AnalysisCBB Contract Budget BaseCBC Cipher Block ChainingCBG Configuration and Build GuideCBN Cuiaba Earth Station

CC Cubic Convolution or Computer Compatible Tape or Cloud CoverCCA Cloud Cover Assessment or Clinger-Cohen Act

Control Account Manager or Command Authorization Meeting or Communications Security Account Manager

CCB Configuration Control BoardCCD Charge-Coupled Device CCDC Continous Change Detection and ClassificationCCE Cryocooler ElectronicsCCI Controlled Cryptographic ItemCCL Commerce Control ListCCM Cloud Cover ManagerCCMS Combined Cache Management SubsystemCCOH Cost Center Overhead

CCPCCR Configuration Change Request CCRS Canada Center for Remote Sensing

CCSCCSDS Consultative Committee for Space Data Systems CCT Computer Compatible Tape or Credit Card TransactionCD Change Directory or Compact DiskCDB Centralized DatabaseCDBS Centralized Database SystemCDE Common Desktop EnvironmentCDH Command and Data Handling CDI Capture Device Identifier CDLR Command Data Loss ReportCDMS Carrier Doppler Measurement System

CDR

CDRL Contract Data Requirements List or Command Data Loss ReportCD-ROM Compact Disk-Read Only Memory CDS Coded Data Segment or Comprehensive Discrepancy SystemCDT Central Daylight Time or CPF Distribution ToolCE Circular Error or Cognizant EmployeeCE90 Circular Error 90CEER Critical Event Readiness ReviewCEOS Committee on Earth Observing Satellites CER Cost Estimating RelationshipCERT Community Emergency Response TeamCES Cost Element StructureCF Correction Factor or Cloud FractionCFC Contact Forecast Confirmation or Cloud Fraction ClimatologyCFDP CCSDS File Delivery ProtocolCFL Conflict NoticeCFMask C version of FmaskCFP Cold Focal Plane

Configuration Change Process or Contamination Control Process or Cloud Cover Prediction

COI Cleanup System or Confirmed Contact Schedule or Constellation Coordination System

Critical Design Review or Calibration Data Record or Climate Data Records

CFPA Cold Focal Plan Array or Cold Focal Plane AssemblyCFR Code of Federal Regulations or Contact Forecast RequestCGB Calculated Gains and BiasesCI Configuration Item or Continuous IntegrationCIA Confidentiality, Integrity, and AvailabilityCIB Controlled Image BaseCIC Computer Interrupt Code CIIL Configuration Item Identifier ListCIL Critical Items ListCIO Chief Information OfficerCIRC Computer Incident Reporting CenterCIS Center for Information SecurityCISO Chief Information Security OfficerCISSP Certified Information Systems Security ProfessionalCITT Center Information Technology TeamCIU Controls Interface Unit CLCW Command Link Control WordCLOB Character Large ObjectCLR Combined Labor Rate Contractor Labor RateCLTU Command Link Transmission Unit CLU Climate and Land Usecm Centimeter CM Configuration Management or Center of MassCMB Change Management BoardCMC Center Management CouncilCMD Command CMG Climate Modeling GridCMM Capability Maturity Model CMMI Capability Maturity Model IntegrationCMO Configuration Management OfficeCMP Configuration Management Plan or Change Management PlanCMS Content Management SystemCN Coherent NoiseCNDs Could-Not-DuplicatesCNES Centre National d’Etudes SpatialesCNNS Committee on National Security ServiceCNR Carrier-to-Noise RatioCO Contract Officer or Content OwnerCOA Cordoba, Argentina Ground StationCOC Certificate of Completion or Cost of ConsequenceCOFUR Cost of Fulfilling a User RequestCOG Center of Gravity or Continuity of GovernmentCOI Common Order InterfaceCOIGUI Common Order Interface Graphical User InterfaceCOLA Collision Avoidance

COMM Communications Subsystem COMSEC Communications SecurityCONAE Commission Nacional De Actividades Espaciales Con Ops Concept of OperationsCONUS Continental United States COOP Continuity of OperationsCOP Contingency Operating ProcedureCOR Contracting Officer Representative or Cost of ReproductionCOTR Contracting Officer’s Technical Representative COTS Commercial Off-The-Shelf CP Calibration Parameter or Change ProposalCPAF Cost Plus Award FeeCPC Contingency Plan CoordinatorCPF Calibration Parameter File CPFF Cost-Plus-Fixed FeeCPI Cost Performance IndexCPIC Capital Planning and Investment ControlCPM Critical Path MethodologyCPO Custodial Property OfficerCPR Cost Performance ReportCPR1 Cost Performance Report 1CPR4 Cost Performance Report 4CPR5 Cost Performance Report 5

CPSCPT Comprehensive Performance TestCPU Central Processing Unit

CRCR1 Computer Room 1CR1MSS Computer Room 1 Mass Storage SystemCR2 Computer Room 2CR2IT Centralized Repository 2 Integration and TestCR2OPS Centralized Repository 2 OperationsCR2ST Centralized Repository 2 System TestCR3 Computer Room 3

CRADA NOAA Big Data Cooperative Research and Development AgreementCRaM Combined Radiometric ModelCRC Cyclic Redundancy Check or Cyclic Redundancy Code CRDEV Central Repository DevelopmentCRIT Central Repository Integration and Test

CRM Customer Relationship Management or Continuous Risk Management

Calibration Parameter Management and Testing Subsystem or COMSEC Security Plan

Central Repository or Controlled Repository or Change Request or Contingency Reserve or Carriage Return or Confirmation Review

CRMP Continuous Risk Management PlanCRMT Contingency Response Management TeamCROPS Central Repository OperationsCRS CDF Retrieval SubsystemCRSSGS China Remote Sensing Satellite Grand Station CRST Central Repository System TestCRTEST Central Repository TestCS Customer ServiceCSA Configuration Status Accounting or Commissioning Support AreaCSAM Cyber Security Assessment ManagementCSC Computer Software ComponentCSCI Computer Software Configuration ItemCSIRT Computer Security Incident Report TeamCSIS Control and Schedule Interface SystemCSMO Chief Safety and Mission Assurance Officer

CSOCSOP COMSEC Standard Operating Procedure

CSR CSS Cascading Style Sheet or Central Security ServiceCSU Computer Software Units CSV Comma Separated ValuesCTDiff Cross-Track DifferenceCTE Calibration Test Equipment or Compatibility Test EquipmentCTHome Cross-Track HomogeneityCTP Command and Telemetry ProcessorsCTS Capture Transfer Subsystem CTV Compatibility Test Van CUB Cuiba, Brazil Ground StationCUI CPF User Interface or Controlled Unclassified InformationCV Command Verification or Cost VarianceCV-5 Calibration and Validation 5CV-7 Calibration and Validation 7CVCDU Coded Virtual Channel Data Unit

CVCMCVDQA Calibration Validation Data Quality Assurance CVE Calibration Validation ElementCVS Concurrent Versions SystemCVT Calibration and Validation TeamCVTK Calibration / Validation Tool KitCVTKRD Calibration and Validation Toolkit Requirements DocumentCVWG Calibration-Validation Working Group CW Continuous Wave

Communication Services Office or Chief Safety and Mission Assurance Officer

Capture Success Rate or Capture Success Ratio or Customer Service Representative

Collected Volatile Condensable Material or Collected Volatile Condensable Mass

CWBS Contractor Work Breakdown StructureCY Contract YearD&M Development and MaintenanceD1R DMS Generate L1RD3 50GB Data tape cartridge from StorageTek DA Document Administrator DAAC Distributed Active Archive Center DACA Days After Contract AwardDAE Data Acquisition Element DAF Data Acquisition Facility DAG Database Administrator GuideDAM Data Acquisition Manager or Database for Analysis and ModelingDAP Data Acquisition Plan or Data Acquisition PlannerDAR Data at RestDART Data Access Restriction ToolDAS Data and Applications SupportDASB Direct Access S-BandDAT Data Access ToolDAU Defense Acquisition UniversityDB Database or Data BlockdB Decibel DBA Database Administrator DBaaS Database as a ServiceDBAR Database Access RoutinesDBCI Database Configuration Item

DBDD Database Design Description or Database Description DocumentdB-Hz Decibel-Hertz dBi Decibel above isotropic DBI Database InterfacedB/K Decibel per Degree Kelvin DBMS Database Management SystemDBS Data Services BranchdBW Decibel Relative to 1 Watt D/C Down ConverterDC Direct CurrentDC&P Data Capture and Processing Facility DCAA Defense Contract Audit Agency

DCCB DCE Data Collection EventDCG DMS Generate Custom GCPLibDCN Document Control Number or Document Change Notice DCO DMS Capture OrderDCOI Data Center Optimization InitiativeDCP Data Collection Planners

DHF Configuration Control Board or Development Configuration Control Board

DCPF Data Capture & Processing FacilityDCR Document Change Request

DCRS

DCRSf

DCRSiDCRSUI Data Collection and Routing Subsystem User Interface

DCSDCT Digital Cassette Tape DDD Displacement Damage DoseDDI DCS Data IngestDDL Database Definition LanguageDDR Data Descriptor RecordDDRC DPAS Design Reference CaseDDS DCS Database Server or Database Distribution SubsystemDDT DPAS Test TeamDDV Dense Dark VegetationDE Definitive EphemerisDEF Definitive Ephemeris Product Delta-I Delta-Inclination DEM Digital Elevation Model DEPEPH Definitive Ephemeris Product DES Station Description Message or DAAC Emergency SystemDET Escape DetectionDEU Digital Electronic UnitDEV DevelopmentDF Diffuser TypeDFCB Data Format Control Book DFD Data Flow DiagramDFP DMS Format and PackageDFT DMS File TransferDG Digital GlobeDGC DMS Generate Custom GCPsDGR DMS Generate Report StatisticsDGT DMS Generate ThumbnailDHCP Dynamic Host Configuration ProtocolDHF Data Handling Facility DHN Data Handling NodeDHS Department of Homeland SecurityDIAR Department of the Interior Acquisition RegulationDIAT Daily Image Annotation Tape

Data Collection and Routing Subsystem or Data Collection and Routing System

Data Collection and Routing Subsystem file router or Data Collection and Routing System file router or Data Collection and Routing System file routerData Collection and Routing Subsystem interval router or Digital Cassette Recorder System Incremental

Data Capture System or Data Characterization Subsystem or Destination Control Statement

DID Data Item Description or DMS Ingest L0R DataDIE DMS Ingest ElementDIR Direction DIRT Data Interception by Remote TransmissionDIS Data Information System or Data Instrumentation SystemDiTL Day in The LifeDIV Data Integrity ValidationDKI Parepare, Indonesia Ground StationD/L Downlink DLT Digital Linear Tape DM Data Management or Document Management or Data ManagerDMA Direct Memory Access or Defense Mapping AgencyDMAPI Data Manager Application Programmer InterfaceDMB Data Management BranchDME Development, Modernization, and EnhancementDMF Data Migration FacilityDMI DCRS to MOE InterfaceDMID Data Management and Information DeliveryDML Data Manipulation LanguageDMP Document Management Plan or Data Management PolicyDMR Detailed Mission Requirements DMS Data Management Subsystem or Degrees, Minutes, SecondsDMSP Defense Meteorological Satellite ProgramDMU Data Migration Utility or Drag Make-UpDMZ Demilitarized ZoneDN Descending Node or Digital Number DNS Domain Name Server or Domain Name SystemDO Delivery OrderDOC Department of Commerce DoD Department of DefenseDOI Department of Interior or Digital Object IdentifierDOORS Dynamic Object-Oriented Requirements System

DOORS-NGDOP Dilution of PrecisionDOQ Digital Orthophoto Quadrangle

DORRAN Distributed Ordering, Research, Reporting, and Accounting Network DoS Denial of ServiceDOS Department of StateDOY Day-of-Year DP Data ProcessingDPA Destructive Physical AnalysisDPAS Data Processing and Archive SystemDPASRD Ddata Processing and Archive System Requirements DocumentDPD DMS Placement Daemon

Dynamic Object-Oriented Requirements Management System Next Generation

DPL DMS Process L0RDPMC Directorate Program Management CouncilDPR DMS Process ROLO ReportDPP DMS Packet and PlacementDPS Data Processing Subsystem or Data Processing SystemDQA Data Quality AnalystDQV Data Quality Validation

DRDRA DMS Retrieve AncillaryDRAC Dell Remote Access ControllerDRB Discrepancy Review BoardDRC Data Requirements ListDRC-16 16-day Design Reference CageDRE DMS Retrieve ElevationDRFP Draft Request for ProposalDRM DMS Resource ManagerDRP Disaster Recovery PlanDRSF Daily Request Status FileDRTS Data Reporting and Tracking SubsystemDSB Data Service BranchDSI DMS Subsetter InterfaceDSL Days-Since-LaunchDSN Deep Space NetworkDSS Data Staging System or DPAS SubsetterDST Data Support TeamDSW DMS Setup Work OrderDSWE Dynamic Surface Water ExtentDTED Digital Terrain Elevation DataDTG Day Time Group DTO Data Transfer ObjectDTR Document Transfer RequestDTS Development and Training SimulationsDUI Data Manager User Interface or DMS Universal L0R IngestDUNS Data Universal Numbering SystemDUZ DMS UTM ZoneDV Data ValidationDV&E Data Validation & ExchangeDVD Digital Versatile DiscDVD-R Digital Versatile Disc – Read OnlyDWF Design Web FormatDXL DMS L0 and L1 ProductsE&A Evaluation and AnalysisE&IT Engineering and Information TechnologyEA Enterprise Architecture

Delivery Record or Discrepancy Report or Disaster Recovery or Design Review

EAC Estimate at CompletionEAR Export Administration RegulationsEAS Evaluation and Analysis Subsystem EASI Enterprise Architecture Study ImplementationEAST EROS Architecture Study TeamEb Energy per Bit EBAS EROS Billing and Accounting SystemEb/N0 Energy per Bit to NoiseEC Electronic CopyECC Error Correction CodeECEF Earth-Centered, Earth-FixedECF Earth Centered FixedECI Earth Centered InertialECITOD Earth Centered Inertial TRUE of Date ECIMOD ECI Mean of DateECL Emitter-Coupled LogicECMP EROS Contingency Plan ManagementeCPIC Electronic Capital Planning and Investment ControlECR Earth Centered RotatingECS EOSDIS Core SystemECU End Cryptographic UnitECV Essential Climate VariableEDAC Error Detection and CorrectioneDAR Enterprise Data At RestEDC EROS Data Center

EDDDR EDC Daily Discrepancy Report or EDC Daily Data Received ReportEDG EOS Data Gateway EDOS EOS Data Processing SegmentEDU Engineering Development UnitEE Earth ExplorerEEE Electrical, Electronic, ElectromechanicalEEMT EROS Executive ManagementEEO Equal Employment OpportunityEF Earth-FixedEFS Encrypting File System E-Government Electronic GovernmentEGS Enterprise Ground SystemEGSE Electrical Ground Support EquipmentEIA Electronic Industry AllianceEIRP Effective Isotropic Radiated Power EIS External Interface SpecificationEISER EROS Information System Event ResponseEJB Enterprise Java BeansEKMS Electronic Key Management System

EL1PS EDC Level 1 Prototype SystemELV Expendable Launch Vehiclee-mail Electronic Mail EMC Electromagnetic CompatibilityEMD Enhanced MetadataEMI Electromagnetic InterferenceEMP Electromagnetic PulseEMV Expected Monetary ValueEN EarthNow!ENVI Environment for Visualizing ImagesEO Earth ObservingEO-1 Earth Observing 1EOC Earth Observation Center EOF End-of-FileEOIS Earth Observation Data & Information Systems EOL End-of-Line EOM End of MissionEOMP End of Mission PlanEOP Executive Office of the PresidentEOS Earth Observing System EOSAT Earth Observation Satellite Company EOSDIS EOS Data and Information System EPA Euler Parameter or ESD Protected AreaEPF ETM+ Processing FacilityEPGN EOS Polar Groundstation NetworkEPP Electronic Power Converter for PayloadEPR Engineering Peer ReviewEPRP Engineering Peer Review PlanEPS Electrical Power Subsystem EPSG European Petroleum Survey Group ERB Engineering Review BoardERD Entity Relationship DiagramEROS Earth Resources Observation and ScienceERR Error ERS EROS Registration ServiceERTS Earth Resources Technology Satellite ESA European Space Agency or Earth Sensor AssemblyESB Enterprise Service BusESD Earth Science Division or Electrostatic DischargeESDIS Earth Science Data and Information System ESF Edge Spread FunctionESM Equipment Support ModuleESMO Earth Science Mission OperationsESN Enterprise Services NetworkESP Encapsulating Security Payload or Engineering Specialty Plans

ESPA EROS Science Processing ArchitectureESRIN European Space Research Institute ESUN Solar Spectral IrradianceETC Estimate to CompletionETE End to EndETL Extraction, Translation, LoadETM Enhanced Thematic MapperETM+ Enhanced Thematic Mapper Plus ETMDSS Enhanced Thematic Mapper Plus Data Subsetting SubsystemETRO Estimated Time of Return to OperationsETV Expected Time ValueEU Engineering Unit EV Earned ValueEVDCU Extended Virtual Channel Data UnitEVM Earned Value ManagementEVMS Earned Value Management SystemEVP Environmental Verification PlanEVS Earth-Vehicle-Sun angle or Earned Value SystemEVT Enhanced Value Techniquee-WAD Employee Work Authorization DocumentEWR Eastern and Western RangesEWW Extended Work WeekF&PS Functional and Performance Specifications FA Formulation AuthorizationFAC Full Aperture Calibrator FAD Formulation Authorization DocumentFAI Federal Acquisition InstituteFAQ Frequently Asked QuestionFAR Federal Acquisition RegulationFASC Full Aperture Solar Calibrator FAST-L7A FAST-Landsat 7 Format FAT Factory Acceptance TestingFAX Facsimile Transmission FBI Federal Bureau of InvestigationFBMS Financial and Business Management SystemFC Formulation Contractor or Fiber ChannelFCA Functional Configuration Audit FC-AL Fiber Channel-Arbitrated LoopFCDAS Fairbanks Command and Data Acquisition StationFD Flight DynamicsFDAC Failure Detection and ControlFDC Failure Detection and CorrectionFDD Facilities Definition Document or Format Description DocumentFDDI Fiber-Distributed Data Interface FEP Front End Processor

FDF Flight Dynamics Facility FDIR Fault Detection, Isolation, & RecoveryFDS Flight Dynamics SystemFEC Forward Error CorrectedFedRAMP Federal Risk and Authentication Management ProgramFEDS Front End Data SystemFEMA Federal Emergency Management AgencyFEP Front-End ProcessorFFOV Full Field of ViewFFP Firm Fixed PriceFRR Flight Readiness ReviewFFRDC Federally Funded Research and Development CentersFFS Fiscal Financial SystemFFT Fast Fourier TransformFFTW Fastest Fourier Transform in the WestFGDC Federal Geographic Data CommitteeFHS First Half Scan FHSERR First Half Scan ErrorFIA Final Implementation AgreementFIFO First In, First OutFIPS Federal Information Processing StandardsFIR Finite Impulse ResponseFISCAM Federal Information System Control Audit ManualFISMA Federal Information Security Management ActFISSA Federal Information System Security AwarenessFmask Function of MaskFMEA Failure Mode and Effect AnalysisFMECA Failure Modes, Effects, and Criticality AnalysisFMFIA Federal Manager’s Financial Integrity ActFMT Format FNMOC Fleet Numerical Meteorology and Oceanography CenterFOCCB Flight Operations Configuration Control BoardFOIA Freedom of Information ActFOM Facilities Operations ManagerFOP Flight Operations Plan FOR Flight Operations ReviewFORMATS Flight Dynamics Orbit and Mission Aids Transformation SystemFOS Flight Operations SegmentFOT Flight Operations Team FOTS Free Off-The-ShelfFOV Field of ViewFPA Focal Plane Assembly or Focal Plane ArrayFPD Flight Projects DirectorateFPE Focal Plane ElectronicsFPGA Field-Programmable Gate Array

FPM Focal Plane ModulesFPPS Federal Personnel Payroll SystemFQT Formal Qualification TestingFRB Full-Resolution BrowseFRED Framed Raw Expanded DataFRP Federal Response PlanFRR Flight Readiness ReviewFRS File Retrieval SystemFS Forecast SchedulesfSCA Fractional Snow Covered AreaFSD Flight Systems DevelopmentFSM Flight Systems ManagerFSSC Financial Support Services ContractFSV Flight Software VendorFSW Flight Software FTA Fault Tree AnalysisFTD File Transfer DaemonFTE Full Time Equivalent or Full Time EmployeeFTP File Transfer Protocol FTS Flight Terminiation SystemFW Firewall or Full WidthFWHM Full Width Half MaximumFY Fiscal Year G&A General and AdministrativeGAfG Google Apps for GovernmentGAM Geography Analysis and MonitoringGAO General Accounting OfficeGAQD Originator Routing Code for IIRV MessagesGAR Global Archive RefreshGAST Greenwich Apparent Sidereal TimeGB Gigabyte GBFOM Global Band Figure of MeritGBICS Gigabit Interface ConvertersGBL Government Bill of LadingGCCB Ground Segment Configuration Control BoardGCDR Ground System Critical Design ReviewGCOR Temperature Corrected GainsGCP Ground Control PointGCRS Geocentric Celectial Reference SystemGCTP General Cartographic Transformation PackageGDAL Geospatial Data Abstraction LibraryGDP Gross Domestic ProductGDS Ground Data SystemsGEO Geolocation Index File GEOM Geometric

GeoRSS Geographic Really Simple SyndicationGeoTIFF Geographic Tagged Image File Format GEVS General Environmental Verification SpecificationGFE Government Furnished EquipmentGFP Government Furnished PropertyGFS Global File SystemGFY Government Fiscal YearGHz GigahertzGIA Government Inspection AgencyGIAC Global Information Assurance CertificationGIDEP Government Industry Data Exchange ProgramGigE Gigabit EthernetGIO Geographic Information OfficerGIPS Geo-Informatics Products and Solutions GIS Geographical Information SystemsGISRA Government Information Security Reform Act

GISTDA GL Geoscience LaboratoryGLAMR Goddard Laser for Absolute Measurement of RadianceGLC Ground Look Calibration Request or Gilmore CreekGloVis Global Visualization ViewerGLS Global Land Survey or Global File SystemGMAP Global Monitoring Acquisition PlanGMSEC Goddard Mission Services Evolution CenterGMSR Government Monthly Status ReviewGMT Greenwich Mean Time GN Ground Network GNC Gatineau, Canada Ground StationGNE Ground Network Element

GNE-DCRS Ground Network Element Data Collection and Routing System

GNEDD Ground Network Element Design DocumentGNERD GNE Requirements DocumentGOES Geostationary Operational Environmental SatelliteGOLD Goddard Open Learning DesignGOP Ground Operations PlanGOS Geospatial One-StopGOT Ground Operations TeamGOTS Government Off-The-ShelfGP4 General Perturbations Theory GPD GSFC Policy DirectiveGPDR Ground System Preliminary Design ReviewGPL General Public LicenseGPR GNE Post-Pass Report or Goddard Procedural Requirement

Geo-Informatics and Space Technology Development Agency (Thailand)

GPS GRI Ground Reference ImageGRIB Gridded DataGRID Global Resource Information DatabaseGRM Ground Readiness ManagerGRS Grid Reference System (SPOT)GRT Ground Readiness TestGRTP Ground Readiness Test PlanGRTT Ground Readiness Test TeamGS Ground System or Ground SegmentGSA U.S. General Services Administration or Ground Station AnalystGSC Ground Station Controller GSCCB Ground System Change Control BoardGSCDR Ground System Critical Design ReviewGSD Ground Sampling Distance or Guide Star DataGSDD Ground System Design Document

GSEGSFC Goddard Space Flight Center

GSI GSICS Global Space-based Inter-Calibration SystemGSIRD Ground System Interface Requirements DocumentGSIT Ground System IntegrationGSITP Ground System Integration and Test PlanGSIWG Ground System Interface Working GroupGSL GNU Scientific LibraryGSM Ground System Manager

GSMOGSMOR Ground System Mission Operations ReviewGSOCD Ground System Operations Concept DocumentGSOPD Ground System Operations Plan DocumentGSPDR Ground System Preliminary Design ReviewGSRD Ground System Requirements Document GSRR Ground System Requirements ReviewGSRT Ground System Review TeamGSRVM Ground System Requirements Verification Maintenance

GSSPGST Geographic Support Team or Ground Station TechnicianGSTDN Ground Spaceflight Tracking and Data Network GSWG Ground System Working GroupGSVVP Ground System Verification and Validation Plan

Geometric Processing System or Gap Phase Statistic or Global Positioning System

Ground Support Equipment or Ground Station Engineers or Ground System Engineer

Ground Station Identifier or Ground System Infrastructure or Ground Support Infrastructure

Ground System Management Office or Ground System and Mission Operations

Guide for Developing Security Plans for Information Technology Systems

GSVWG Ground System Verification Working GroupG/T Gain over Temperature GTOPO30 Global 30 Arc-Second Elevation Data SetGUI Graphical User Interface GXA Gimbaled X-Band Antennae HA High AvailabilityHAAT Header, Ancillary, Annotation, and TrailerHC Hard CopyHCR Hardware Configuration Request or Hardware Change RequestHDDS Hazards Data Distribution SystemsHDF Hierarchical Data Format HDF5 Hierarchical Data Format Version 5HDF-EOS Hierarchical Data Format - Earth Observing SystemHDF5-EOS Hierarchical Data Format Version 5 - Earth Observing SystemHDFS Hadoop File SystemHDLC High-Level Data Link ControlHDM Hardware Data Manager or HSM Data ManagerHDR Header HDRM High Data Rate ModemHDS Horizontal Display ShiftHDT High Density Tape HDTR High Density Tape RecorderHE Hardware EngineerHex Hexadecimal HgCdTe Mercury Cadmium TellurideHGS Hallway Ground StationHK HousekeepingHLD High-Level DocumentHMP Hardware Management PlanHOM Hotine Oblique MercatorHOMFiH Homogeneity FilterHPA High Power AntennaHPN Panchromatic Band Header FileHPP Highest Point in PolygonHQ HeadquartersHR Human Resources or Heritage ReviewHR MSI High-Resolution Multi-Spectral ImagerHRS Horizontal Resampling SpaceHRV High Resolution Visible (SPOT sensor)

HSM Hierarchical Storage Management or Hierarchical Storage ManagerHSPD Homeland Security Presidential DirectiveHTM Thermal Bands Header FileHTML Hypertext Markup Language HTSI Honeywell Technology Solutions Inc.

HTTP Hypertext Transfer Protocol HTTPS Hypertext Transfer Protocol SecureHUB Historically Underutilized BusinessHVAC Heating, Ventilation, & Air ConditioningHVU High Volume UserH/W HardwareHWCI Hardware Configuration Item Hz Hertz I In-Phase Channel I&T Integration and Test I1 Internet 1I2 Internet 2I2I Image-to-ImageI2RV Improved Inter-Range Vector Message

IAIAA Inter-Agency AgreementIaaS Infrastructure as a ServiceIAC Independent Assurance Contractor or Issue Assessment CodeIAD Ion-Assisted DepositionIAS Image Assessment Subsystem or Image Assessment SystemIASICP IAS Internal Calibrator PulseIATO Interim Authority To OperateIAU International Astronomical UnionIAW In Association WithIBM International Business MachinesIBR Integrated Baseline Review

ICICD Interface Control Document ICDR Instrument Critical Design ReviewICe Internal Calibrator processing for Emissive bandsICF Initial Correction FactorICMP Internet Control Message ProtocolICO International Cooperator OfficeICT Interface Connectivity Testing

ICVSICWP IC Web PortalID Infrastructure Design or Interface Documents or IdentificationIDCC Interval Data Collection ConceptIDCO Image Data Collection OmissionIDCS Image Data Collection ScheduleIDD Interface Definitions Document

Implementing Agreement or Impact Analysis or International Activities or Interagency Agreement

Interface Control or International Cooperator or Internal Calibrator or Internal Cache

Independent Calibration and Verification Segment or Independent Characterization and Verification System

IDEIDF Interval Definition File or Image Data FileIDIQ Indefinite Delivery Indefinite QuantityIDL Interactive Data LanguageIDP Individual Development PlanIDPS Image Data Processing Subsystem IDR IAS Data RecorderIDS Intrusion Detection System or Interval Delivery SubsystemIDSO Image Data Schedule OmissionIDSR Image Data Schedule ReportIDWR Idaho Department of Water ResourcesIE Infrastructure Element

IECIEEE Institute of Electrical and Electronics Engineers IEM Integrated Electronics ModuleIERS International Earth Rotation ServiceIETF Internet Engineering Task ForceIF Intermediate FrequencyIFAT ITOS File Accounting ToolIFFT Inverse Fast Fourier TransformIFOV Instrument Field of View or Instantaneous Field of View IGE Independent Government EstimateIGMP Internet Group Management ProtocolIGS Integrated Security Gateway or International Ground StationIIR Image Impact ReportIIRR Instrument Integration Readiness ReviewIIRV Improved Inter-Range Vector IIOP Internet Inter-ORB ProtocolIKE Internet Key ExchangeILI IGS to LAM InterfaceIM Instant Message or Inclination ManeuverIMB Issue Management BoardIMF Inverse Minor Frames or Interval Metadata FileIMP Information Management Plan or Integrated Master PlanIMR Issue Management RecordIMS Integrated Master Schedule or Information Management SystemIMT Integrated Mission TimelineIMU Inertial Measurement Unit or Internal Measurement Unit IMWD Internet Moving Window DisplayIN Impulse Noise or IngestINCOSE International Council on Systems EngineeringINFOSEC Information SecurityING Ingest

Integrated Device Electronics or Infrastructure Development or Integrated Development Environment

iStat Executive Committee or International Electrotechnical Commission

INM IGS Network ManagerINPE National Institute for Space Research InSb Indium AntimoniteINV InventoryI/O Input/Output

IOCIOE Instrument Operations Element IONET IP Operational NetworkIP Internet Protocol or Installation PlanIPA Inter-Project Agreement or Instrument Pallet AssemblyIPAC Intergovernment Payment and Collection

IPCIPComp IP Payload Compression ProtocolIPDR Instrument Preliminary Design ReviewIPDS Information Product Data SystemIPDU Internet Protocol Data UnitIPE Image Processing Element

IPMIPMR Integrated Program Management ReportIPMS Integrated Project Management SystemIPMSD Integrated Project Management System DescriptionIPO Integrated Program OfficeIPP Invoice Processing PlatformIPR Intersegment Problem Report IPS Intrusion Prevention System or Image Processing SubsystemIPSec Internet Protocol SecurityIPSR Instrument Pre-Ship ReviewIPT Integrated Project Team or Integrated Product TeamIPV Integrated Pulse ValueIR InfraredIRB Investment Review BoardIRD Interface Requirements DocumentIRFP Implementation Request for ProposalIRP Incident Reporting PlanIRR Integrated Readiness ReviewIRS Interface Requirements Specification IRU Inertial Reference UnitIRV Improved Inter-Range Vector MessageIS Ingest System

ISA

Initial Operational Capability or Initial On-orbit Checkout or Installation Operational Certification or In-Orbit Checkout or Initial Operational Configuration

Institute for Interconnecting and Packaging Electronic Circuits or Inter-Process Communication

IGS Priority Mask Online Tool or IGS Priority and Request Map or Incyte Project Manager

Internet Security and Acceleration or Interconnection Security Agreement

ISCCP International Satellite Cloud Climatology ProjectISCP Infromation System Contingency PlaniSCSI Internet Small Computer System InterfaceISD Interface Specification DocumentISF Instrument Support FacilityISI Integral Systems IncorporatedISL Inter-Switch LinkISO International Standards Organization ISRO Indian Space Research OrganizationISSLOB Information Systems Security Line of BusinessISSO Information System Security OfficialIST Integrated System Test

ISTESRIT Information Technology or Integration TestITAR International Traffic in Arms RegulationsITC Integration Test CaseITOS Integrated Test and Operations SystemITRS International Terrestrial Reference SystemITS Information Technology Services or Integrated Time SweepITSEC Information Technology SecurityITSNOC Information Technologies Service Network Operations CenterITSOT Information Technology Security Operations TeamITSS Information Technology and Scientific Services ITU International Telecommunications UnionIU Individual UserIUR Individual User RequestIV&V Independent Verification and ValidationIVM Interface Verification MatrixIW&DS Information Warehouse and Data StoreIWAD Individual Work Authorization DocumentIWG Interface Working Group IWT Image Window TableJ2EE Java 2 Platform, Enterprise EditionJAR Java ArchiveJAXA Japan Aerospace Exploration AgencyJaxB Java Architecture for XML BindingJBOD Just a Bunch Of DisksJBOSS J2EE Application ServerJCL Joint Confidence LevelJDBC Java Database ConnectivityJDK Java Development KitJFIF JPEG File Interchange FormatJMS Java Messaging ServiceJMSRA Java Message Service Resource Adapter

Ingest Subsystem Test Execution Summary Report or Inventory Subsystem Test Execution Summary Report

JPEG Joint Photographic Experts Group JPF Job Parameter FileJPL Jet Propulsion Laboratory JSA Johannesburg, South Africa Ground StationJSP Java Server PagesJSpOC Joint Space Operations CenterJSR Java Portlet SpecificationJTS Java Topology SuiteJVM Java Virtual MachineK Degrees Kelvin KA8 Known Anomaly EightKB Kilobyte KDP Key Decision Pointkg KilogramKHB Kennedy Space Center HandbookKHC Kashi, China Ground StationkHz Kilohertz KIS Kiruna, Sweden Ground Stationkm Kilometer KMI Key Management InfrastructureKML Keyhole Markup LanguageKMP Key Management PlanKPI Key Performance IndicatorKPM Key Performance MeasuresKPR Key Performance RequirementKSAT Kongsberg Satellite ServicesKSC Kennedy Space CenterKUJ Kumomoto, Japan Ground StationKVM Keyboard Video MouseL+30 Launch + 30 DaysL+60 Launch + 60 DaysL+90 Launch + 90 DaysL0 Level 0L0c Level 0 CorrectedL0R Level 0 ReformattedL0Ra Level 0 Reformatted Archive L0Rc Level 0 Reformatted CorrectedL0Rp Level 0 Reformatted ProductL1 Level 1 L1AOS Level 1 Automatic Ordering SystemL1G Level 1 Systematic (Corrected)L1Gs Level 1 Geometric SystematicL1Gt Level 1 Systematic Terrain (Corrected)L1P Level 1 Precision (Corrected)L1R Level 1 Radiometric (Corrected)

L1R-H Hybrid Level 1 RadiometricL1SE Level 1 Sustaining EngineeringL1T Level 1 Terrain (Corrected) or Level 1 Precision and TerrainL1TP Level 1 Terrain Precision (Corrected)L2 Level 2L3+ Level 3+L4 Level 4 or Landsat 4L5 Landsat 5 L7 Landsat 7 L8 Landsat 8L9 Landsat 9LACCA Land Automated Cloud Cover AssessmentLACS Landsat Archive Conversion SystemLADS LDCM Archive and Dissemination SegmentLAM008 Interface Between COI PS and L0Rp PSLAM Landsat Archive Manager LAM AS LAM Archive ServerLAN Local Area Network LANDSAT Land SatelliteLAS Land Analysis System LASP Laboratory for Atmospheric and Space Physics LaSRC Land Surface Reflectance CodeLAT Latitude LBG Libreville, Gabon Ground StationLC LDCM ContractorLCC Lambert Conformal Conic or Lifecycle CostLCCB Landsat Configuration Control BoardLCCR Landsat Configuration Change RequestLCG Landsat Coordination Group LCGS LDCM Contractor Ground SegmentLCMAP Land Change Monitoring Assessment and ProjectionLCR Logical Change RecordLCSS LDCM Contractor Space SegmentLDAP Lightweight Directory Access ProtocolLDB IAS Local DatabaseLDCC Landsat Data Continuity ContractLDCM Landsat Data Continuity Mission LDI LPS Data Ingest or L0Ra Data IngestLDIF LDAP Data Interchange FormatLDIS LAM to DORRAN Interface SystemLDPC Low Density Parity CheckLDPS Landsat Data Purchase SystemLDRCS LDCM Document Review Comment SpreadsheetLDTS LPS Data Transfer Subsystem LEDAPS Landsat Ecosystem Disturbance Adaptive Processing System

LEI LAM to ECS InterfaceLEM Lower Equipment Module L&EO Launch and Early OrbitLEO Low Earth Orbiting or Launch and Early OrbitLEO&A Launch, Early Orbit and ActivationLEO-T Low Earth Orbiter-TerminalLES Log file Extraction ServicesLevel A Level Zero AggregatedLF Line-FeedLG L0Ra GeneratorLGAC Landsat Global Archive ConsolidationLGGS Landsat Global Geodetic StandardLGN Landsat Ground NetworkLGPL Lesser General Public LicenseLGS Landsat 7 Ground System or Landsat Ground StationLGSOWG Landsat Ground Station Operations Working Group LHC Left-Hand Circular LHCP Left-Hand Circularly PolarizedLHS Left-Hand Side or Left-Hand SLOLIB LibraryLICS Landsat International Communication System

LID Landsat and LDCM Inventory Database or LSDS Inventory DatabaseLIFO Last In, First OutLIL Landsat Inventory LoaderLIM Landsat Inventory Management or LDCM Interface for MetadataLIMA Landsat Image Mosaic of AntarcticaLIMB LAM Interface for Metadata and BrowseLIR LDCM in RetrospectLIS Landsat Integration System or LACS Inventory SystemLISS-III Linear Imaging Self-Scanning Sensor IIILITAP Landsat Intersegment Technical Assessment Panel LL Lower Left LLI LAM to LACS InterfaceLLIS LAM LPGS Interface SubsystemLM Labeled MaskLmax Maximum RadianceLMC Lockheed Martin Corporation LMCM Launch Management Coordination MeetingLMD Landsat Mission DatabaseLMDD Landsat Metadata Description DocumentLMDRS Landsat Metadata Documentation and Reporting SystemLMI Lower Equipment Module Interface LMMS Lockheed Martin Missiles and Space LMO Landsat Mission Operations

LMOC Landsat Multi-Satellite Operations Center

LMOCRD Landsat Multi-Satellite Operations Center Requirements DocumentLMOP Landsat Mission Operations ProjectLMST Local Mean Solar TimeLMWS Landsat Mission Web SiteLNA Low Noise AmplifiersLNET Lustre NetworkingLO Local OscillatorLOA Letter of AgreementLOC Letter of CooperationLOE Level of EffortLON Longitude LOOFA Landsat 7 On-Orbit Flight AutomationLOP Landsat Operational ProcedureLOS Loss of Signal or Line-of-Sight LP DAAC Land Processes Distributed Active Archive Center

LPDSLPGS Landsat Product Generation SystemLPGSUI Landsat Product Generation Subsystem User InterfaceLPO Landsat Program Office or LSDS Program OfficeLPS Landsat 7 Processing System LPSNG Landsat Processing System Next GenerationLPSO Landsat Project Science Office LPT Limited Performance TestLR Lower Right LRD Launch Readiness DateLRMB LDCM Risk Management Board LRR Launch Readiness ReviewLRS Landsat Remote SensingLRSP Land Remote Sensing ProgramLS Launch SegmentLSAA Landsat and Sentinel Archive and AccessLSATH High Saturation RadianceLSATL Low Saturation RadianceLSB Least Significant Bit LSC Landsat Security CommitteeLSCF Landsat Solar Calibration FrameLSDS Land Satellites Data SystemLSF Line Spread Function

LSIMSSLSIS Landsat Science Information SystemLSO LDCM Science Office

Level 1 Product Distribution System or LDCM Data Product Specification

LDCM Scalable Integrated Multi-Mission Support System or Landsat Scalable Integrated Multi-Mission Support System

LSP Launch Support Program or Logistics Support PlanLSQ Least SquaresLSQAT Landsat Science Quality Assurance TeamLSR Launch Support RoomLSRD LSDS Science Research and DevelopmentLSS Launch Services SegmentLST Landsat Science Team or Land Surface TemperatureLTA Long Term ArchiveLTAP Long-Term Acquisition PlanLTAS Landsat Trending and Analysis System LTI Legacy Tape IngestLTO Linear Tape OpenLTS LACS Transcription SystemLTVA Limited Technical Vulnerability AssessmentLTWG Landsat Technical Working Group Ltypical Typical RadianceLUN Logical Unit NumberLUT Look-Up TableLV Launce VehicleLVDT Linear Variable Differential TransformerLVRR Launch Vehicle Readiness ReviewLWIR Long Wavelength Infrared LXR Landsat Transfer Radiometerm meter M2M Machine-to-MachineM&PCB Materials and Processes Control BoardM&PCP Materials and Processes Control Program

MAMAC Media Access Control or Monitor and Control Subsystem

MACS MSS-X Archive Conversion System or Monitor and Control SubsystemMAD Median Absolute DeviationMAE Materials Assurance EngineerMAID Massive Array of Idle Disks or Master Action Item DatabaseMAM Mission Assurance ManagerMAP Mission Assurance PlanMAR Mission Assurance RequirementsMAS MODIS Archive System MB Megabyte MBO Management by ObjectsMbps Megabit per Second MC MAC Controller

MCDL Master Configured Document List or Master Controlled Document List

Mission Archive or Multiple Access or Major Application or Mission Assurance

MCDR Mission Critical Design ReviewM-CDR MOC Critical Design ReviewMCE Mirror Control ElectronicsMCM Multi-Chip ModuleMCR Mission Concept ReviewMCS Monitor and Control Subsystem MD Metrics Database or Mission Data or Mission DataMD5 Message-Digital Algorithm 5MDA MacDonald, Dettwiler, and AssociatesMDGLS Mid-Decadal Global Land SurveyMDH Mission Data HeaderMDIO Mission Data Input / OutputMDL Metadata LoaderMDM Mission Data ManagementMDR Mission Dress Rehearsal or Mission Definition ReviewMDS MMO Database System or Metadata ServerMDT Metadata TargetME Memory Effect

MEBMEC Metrics ETL ComponentMEF Mission Essential FunctionMEOS Multi-mission Earth Observation SystemMER Mission Equipment Room

minor frameMF Minor Frame MFC Microsoft Foundation Classes or MAC Fetch CPFMFPS Major Frame Processing Subsystem MFR Multi-Functional ReceiverMG Metadata GeneratorMGS MODIS Ground Station or Management ServerMGT Management TargetMHz Megahertz MI Mutual InformationMIL Materials Identification List or MAC Inventory L0RaMIS Master Integrated Schedule or Management Information SystemMISR Multiangle Imaging SpectroRadiometerMIT Massachusetts Institute of TechnologyMJF Major FrameMJP MAC Job ProcessorMLC Most Likely CaseMLDRCS Master LDRCSMLH Maximum Likelihood EstimateMLI MACS to LAM Interface MLT Mean Local Time

Materials Engineering Branch or Main Electronics Box or McMurdo, Antarctica

mf 

mm Millimeter MM Multi-Mission or Mission Managermm/hr Millimeters per Hour MM&A Mission Monitor & AnalysisMMA Mission Management AnalystMMIO Modified Morarec Interest OperatorMMO Mission Management OfficeMMOIO Mission Management Office Information OfficerMMOSA MMO Security ActivityMMOSE Mission Management Office Systems EngineerMMR Mission Requirements Review

MMS MDGLS Management System or Multimission Modular SpacecraftMO&DSD Mission Operations and Data System Directorate MOA Memorandum of AgreementMOC Mission Operations Center MOCRD Mission Operations Requirement DocumentMODIS Moderate Resolution Imaging Spectrometer MODNET MO&DSD Operational/Development Network

MODTRAN Moderate Resolution Transmittance atmospheric modeling softwareMOE Mission Operations ElementMOERD Mission Operations Element Requirements DocumentMOI Moment of InertiaMOM Mission Operations ManagerMOP Mission Operations PlanMOPSS Mission Operations Planning and Scheduling System MOR Mission Operations Room or Mission Operations ReviewMORM Mission Operations Readiness ManagerMOS Mission Operations Simulation

MOTS Mission Off-The-ShelfMOU Memorandum of Understanding MOVE Mission Operations Voice EnhancementMOWG Mission Operations Working GroupMP Multi-ProcessorM-PDF MOC Preliminary Design ReviewMPEG Moving Picture Experts GroupMPLS Multi Protocol Label SwitchingMPR Monthly Progress Review MPS MODIS Processing System or Mission Plan System

MPSR Management Program Status Review or Monthly Project Status ReportMR Management ReserveMRB Milestone Review Board or Material Review Board

MRC Metrics Reporting Component or Metadata RecordMRG Metrics Report GUIMRLC Multi-Resolution Land CharacteristicsMRR Mission Requirements ReviewMRT Mission Readiness TestingMRTG MultiRouter Traffic Grapherms millisecond MS MultispectralMSA Master Schedule of Activitiesmsb Most Significant Bit MSB Most Significant Byte MSCD Mirror Scan Correction Data MSE Mission Systems EngineeringMSFC Marshall Space Flight CenterMSI Multi-Spectral InstrumentM-SIR MOC System Integration ReviewMSK Receive Antenna Horizon Mask Message

MSMMSO Mission Support OfficeMSPSP Missile System Prelaunch Safety Data PackageMSR Monthly Status ReviewM-SRR MOC System Requirements ReviewMSS Multispectral Scanner or Mass Storage SystemMSS-A Multispectral Scanner - Archive FormatMSS-P Multispectral Scanner - Processed FormatMSS-X Multispectral Scanner data, reformatted CCT-X dataMST Mission Support TeamMTA Metadata MTBF Mean Time Before FailureMTDSS MS and TM Data Subsetting SystemMTF Modulation Transfer Function MTFC Modulation Transfer Function Compensation MTI Matera, ItalyMTL Level 1 MetadataMTP Distribution Product Metadata MTR Mission Transition ReviewMTS MDS Transformation Services

MTTRMTU Maximum Transmission UnitMUA Materials Usage AgreementmW milliWatt MWD Moving Window Display

MultiService Mobility or Mission Simulations Manager or Management Switch Module or Mission Operations Center Systems Manager

Mean Time to Restore or Mean Time to Repair or Mean Time to Recovery

N0 Noise Density N/A Not Applicable NAD83 North American Datum of 1983NAK Negative AcknowledgementNARA National Archive and Records AdministrationNAS NASA Assurance Standard or Network Attached StorageNASA National Aeronautics and Space Administration Nascom NASA Communications NASDA National Space Development Agency (Japan) NAVOCEANO Naval Oceanographic OfficeNBII National Biological Information InfrastructureNB Narrow BandNBR Normalized Burn Ratio or Navigation Base ReferenceNCAS National Carbon Accounting System NCC Network Control Center NCEP National Centers for Environmental PredictionNCSA National Center for Supercomputing Applications NCT Network Connectivity TestNDA Non-Disclosure AgreementNDE Non-Destructive ExaminationNDF NLAPS Data Format NDI Non-Development ItemsNDIA National Defense Industrial Association

NDPNDPF NASA Data Processing FacilityNDSI Normalized Difference Snow IndexNDVI Normalized Difference Vegetation Index

Noise Equivalent Delta TemperatureNED Natural Elevation DataNEDL Noise Equivalent Detector RadianceNEDT Noise Equivalent Detector TemperatureNEMA National Electrical Manufactures AssociationNEN Near Earth NetworkNENUG Near Earth Network User’s GuideNEOS National Earth Orientation Service NEPAG NASA EEE Parts Assurance GroupNESDIS National Environmental Satellite Data and Information Service NewOps New Operational Procedures SystemNEX NASA Earth ExchangeNFS Network File SystemNG National GuardNGA National Geospatial Intelligence AgencyNGAC National Geospatial Advisory CommitteeNGST Northrop Grumman Space Technology

National Satellite Land Remote Sensing Data Archive (NSLRSDA) Data Package

NErT

NHB NASA HandbookNIC Network Interface CardNIFC National Interagency Fire CenterNIPD Network Interface Planning DocumentNIR Near-infraredNISN NASA Integrated Services Network NIST National Institute for Standards and TechnologyNITF National Imagery Transformation FormatNLAPS National Land Archive Production System NLI National Land ImagingNLIP National Land Imaging Programnm NanometerNMAS National Map Accuracy StandardsNMD National Mapping DisciplineNMS Network Management SoftwareNN Nearest NeighborNOA New Oblicating AuthorityNOAA National Oceanic and Atmospheric Administration NOC NUGS Operations ConceptNOLAN Nascom Operational Local Area Network NOM Network Operations ManagerNOR NORAD Two Line Element Message NORAD North American Air Defense NOVAS Naval Definition Vector Astronomy SoftwareNP Narrative ProcedureNPD NASA Policy Directive

NPOESS National Polar-orbiting Operational Environmental Satellite SystemNPR NASA Procedural RequirementsNPS National Park ServiceNPSL NASA Parts Selection ListNPV Net Present Value or Net Pulse ValueNRCA Nonconformance Reporting and Corrective ActionNRT Network Readiness TestNRTL Nationally Recognized Testing LaboratoryNRZ-L Non-Return to Zero-Level NRZ-M Non-Return to Zero-Mark NSA National Security AgencyNSC Norwegian Space Centre

NSDI NSF National Science FoundationNSG Neustreilitz, Germany Ground StationNSLRSDA National Satellite Land Remote Sensing Data ArchiveNSM Network and Security Manager

Normalized Snow Difference Index or National Spatial Data Infrastructure

NSN/NSG Neustrelitz Ground Station (Germany)NSPAR Nonstandard Parts Approval RequestNSS NASA Safety StandardNSSDC National Space Science Data CenterNSTC National Science and Technology CouncilNTE Not To ExceedNTIA National Telecommunications and Information AdministrationNTP Network Time ProtocolNUC Non-Uniformity CorrectionNUGS NASA-USGS Joint Ground SystemNUP North UpNWIS National Water Information SystemNWP Numerical Weather PredictionNWS National Weather ServiceO&M Operations & MaintenanceO&S Operations & Sustaining

OA Operational Archive or Operations Agreement or Operations AnalystOAG Office of Acquisitions and GrantsOAR On-Orbit Acceptance Review or Operational Acceptance ReviewOAV Operational Verification AssessmentOBC Onboard ComputerOBE Overcome By EventsOBP On-Board ProcessorOBS Organizational Breakdown StructureObs-IRD Observatory Interface Requirements DocumentOC Online Cache or Operations ConceptOCAO Office of the Chief Administrative OfficerOCC Operator Control Console or OccurrenceOCD Operations Concept DocumentOCI Organization Conflict of InterestOCIO Office of the Chief Information OfficerODBC Open Database ConnectivityODC Other Direct CostsODL Object Description Language ODNI Office of the Director of National IntelligenceODOS Order Distribution and Order StatusODS Order Distribution ServiceOE Operations EngineerOEM Original Equipment Manufacturer or Oracle Enterprise ManagerOFE Order Fulfillment ElementOGC Open Geospatial ConsortiumOHS Order Handler SubsystemOIRD Observatory Interface Requirements DocumentOITL Orbit-In-The-LifeOIV On-orbit Initialization and Verification

OLAP On-Line Analytical ProcessingOLI Operational Land ImagerOLI-2 Operational Land Imager-2OM Operations and MaintenanceOMA Oblique Mercator Type A OMB Office of Management and Budget or Oblique Mercator Type BOMP Operations Management PlanOMS Optimum Management SystemOO Orbit OrientedOOB Out-of-BandOPA Organizational Process AssetOPM Office of Personnel ManagementOPM3 Organizational Management Maturity ModelOPR Office of Primary ResponsibilityOPS Operations

Ops Con Operations Concept

Ops GUI Operations Graphical User InterfaceOR Operations ReadinessORB Object Request BrokerORR Operations Readiness ReviewORT Operational Readiness TestOQPSK Offset Quadrature Phase Shift KeyingOS Operating SystemOSC Orbital Science CorporationOSHA Occupational Safety and Health AdministrationOSI Open Systems Interconnection OSS Object Storage Server or Operations Support SimulationsOSSMA Office of Systems Safety and Mission AssuranceOST Object Storage TargetOSTP Office of Science and Technology PolicyOTB Over Target BaselineOTF Optical Transfer FunctionOTS OLI-TIRS Subsetter or Over Target Schedule or Off-The-ShelfOUI Operator User Interface OV Operational VerificationOVA Operations Validation and AcceptanceOVAD Operational Verification Acceptance DocumentOVAP Operational Verification Acceptance PeriodOWB Oracle Warehouse Browser or Oracle Warehouse BuilderOWSGUI Oracle Web Service GUI P3I Preplanned Product ImprovementP&C Project Management and ControlsP&S Planning and Scheduling

PaaS Platform as a Service

PAC Partial Aperture Calibrator or Prince Albert, Canada Ground StationPAIV Project Acceptance and Implementation VariancePAM Pluggable Authentication ModulePAN Production Acceptance Notification or Panchromatic PAP Primary Archive ProgramPAPH Pseudo Average Pulse HeightPAPL Project Approved Parts ListPAR Post Assessment ReportPASC Partial Aperture Solar Calibrator PB Playback or PetabytePBL Project Baseline LogPBS Project Breakdown StructurePBTLM PB X-Band Housekeeping Telemetry

PC

PCA Pcache Processing CachePCB Parts Control Board or Project Control BoardPCD Payload Correction Data PCDS Payload Correction Data Subsystem PCI Peripheral Component InterfacePCI-E or PCIe Peripheral Component Interconnect ExpressPCI-X Peripheral Component Interconnect ExtendedPCM Pulse Code ModulationPCP Parts Control PlanPCR Project Closeout Review

PCS PCSS Program Coordinate Systems Standards PCU Power Control UnitP/D Programmable DemodulatorPD Product Distribution or Position Description or Program DirectivePDA Personal Digital AssistantPDB Program Decision Board or Project DatabasePDD Presidential Decision Directive PDF Portable Document Format or Payload Data Formatter PDI Product Delivery InterfacePDL Product Design LeadPDM Precedence Diagramming MethodPDPS Planning and Data Processing Segment PDR Product Delivery Record or Preliminary Design ReviewPDRD Product Delivery Record Discrepancy

Personal Computer or Polyconic or Production Control or Program Charter or Property ClerkPhysical Configuration Audit or Physical Channel Access or Point of Closest Approach

Process Control Subsystem or Product Control Subsystem or Production Control Subsystem

PDRM Product Delivery Receipt MechanismPDS Product Distribution System PDU Protocol Data Unit or Power Distribution UnitPED Personal Electronic Device or Portable Electronic DevicePER Performance Evaluation Review or Pre-Environmental ReviewPERT Program Evaluation and Review TechniquePF Polarization FactorPF1 Poker Flats 1PFPA Prime Focal Plan Assembly PFR Problem / Failure ReportPG Product GenerationPgC Program CharterPgIMS Program Integrated Master SchedulePgMP Program Management PlanPGN Polar Ground Network

PGSPgWBS Program Work Breakdown StructurePHA Preliminary Hazard AnalysisPI Primary Investigator

PIA Project Implementation Agreement or Privacy Impact AssessmentPIB Payload Interface Board

PICSPID Process IdentificationPIE Payload Interface ElectronicsPII Personally Identifiable InformationPIL Parts Identification ListPIMS Project Integrated Master SchedulePIP Premium Internet ProtocolPIV Personal Identity VerificationPKI Public Key InfrastructurePKO Project Kick-OffPL Public LawPLA Payload Adapter

PLARPL-DRO Phase Locked Dielectric Resonance Oscillator PL/SQL Procedural Language / Structured Query Language

PM Phase Modulation or Program Management or Project ManagementPMB Performance Measurement BaselinePMBOK Project Management Book Of Knowledge

Product Generation System (Generic Name for NLAPS) or Product Generation Subsystem

Pseudo-Invariant Calibration Site or Planetary Image Cartography System

Post Launch Assessment Review or Program Level Requirements Agreement or Program Level Requirements Appendix

PMC Performance Monitoring Counter or Program Management CouncilPMEF Primary Mission Essential FunctionPMI Project Management InstitutePMMM Program Management Maturity ModelPMO Persistent Mission Object

PMPPMPDR Physical Media Product Delivery Record PMPDRD Physical Media PDR Discrepancy PMRT Post-Mission Readiness TestingPMSC Program Management Systems Committee

PMSEIT Program Management, Systems Engineering, and Integration and TestPMT Performance Measurement TechniquePN Pseudorandom Noise or Pseudo-NoisePNG Portable Network GraphicsPNTR Pointer PO Project Owner or Purchase OrderPOA&M Plan of Action and MilestonesPOC Point of ContactPOJO Plain Old Java ObjectPOL Policy

POP Point-Of-Presence or Point of Performance or Period of PerformancePOS Position and Orientation SystemPOSC Petrotechnical Open Software Corporation POSIX Portable Operating System Interface for UnixPP Planning PackagePPF Payload Processing Facility PPL Preferred Parts ListPPM Program Project Managementppm Parts Per MillionPPOC Procurement Point of ContactPPQA Process and Product Quality AssurancePPR Post-Pass ReportPPS Pulse Per Second

PRPRA Paperwork Reduction Act or Probabilistic Risk AssessmentPRB Problem Report Message PRD Project Reference DatabasePRI Priority Mask Message PRISM Professional Resources in Information Systems ManagementPRL Pull Remote Logs

Project Management Professional or Project Management Plan or Procurement Management Plan

Program Review or Problem Report or Product Request or Purchase Request

PS Polar Stereographic or Production ServerPSA Pre Security AssessmentPSD Power Spectral DensityPSF Point Spread FunctionPSGUI Production Server Graphical User InterfacePSI PCS Startup IASPSK Phase Shift Keyed PSLA Project Service Level AgreementPSM Project Safety ManagerPSMON Power Status Monitor

PSRPSU Power Supply UnitPTM Principal Task Manager

PTP Primary Transfer Program or Programmable Telemetry ProcessorPTR Post-Test ReviewPTS Project Task StructurePUB PublicationPUP Perfectly Uniform PitchPV Planned ValuePVCS Polytron Version Control System PVL Parameter Value Language PWA Printed Wire AssemblyPWB Printed Wiring BoardPWBS Project Work Breakdown StructurePWC PCS Work Order ControllerPWG PCS Work Order GeneratorPWL PCS Work Order Scheduler LitePWS Project Web SiteQ&A Quality and Accounting Q Quadrature Channel Q1 Quarter 1Q1G L1G Quality AssuranceQ1R L1R Quality AssuranceQ2 Quarter 2Q3 Quarter 3Q4 Quarter 4QA Quality Assurance or Quality AssessmentQAA Quality Assurance AuditQAS Quality Assessment SubsystemQB Quality Board or Quality BandQC Quality ControlQCM Quartz Crystal MicrobalanceQFS Quick File System

Priority/Service Request Mask File or Pre-Ship Review or Pre-Shipment Review or Program Status Review

QMM Landsat Quarterly Management Meeting QMP Quality Management PlanQMS Quality Management SystemQOCI Qt Oracle Call InterfaceQPSK Quadrature Phase Shift Keying QUI Quality Assurance User InterfaceQWIP Quantum Well Infrared PhotometersQWR Quarterly Web Review R&D Research and DevelopmentR0C A stage of Radiometric Processing; Radiometric Calibration

R0R A stage of Radiometric Processing; Radiometric Artifacts CollectionR1 Release 1R1R A stage of Radiometric Processing; Cosmetic ChangesR21 Resource 21R3 Release 3RA Right Ascension or Risk AssessmentRAC Real Application Cluster or Risk Assessment CodeRAD Radiometric or Rapid Application DevelopmentRadSim Radiometry SimulatorRAID Redundant Array of Independent Disks

RAM RAMP Radarsat Antarctica Mapping ProjectRAS Reliability, Availability, ServiceabilityRBD Risk Based DecisionRBS Reflective Band Sensor or Risk Breakdown StructureRBST Role Based Security TrainingRBV Return Beam Vidicon R-C Resistor-CapacitorRCA Radio Corporation of AmericaRCA-EO Requirements, Capabilities, and Analysis for Earth ObservationsRCC Raw Computer Compatible RCM Resource Configuration ManagerRCN Revision Control Number RCR Remote Controlled RepositoryRCS Reaction Control SystemRD Requirements DocumentRDAC Redundant Disk Array ControllerRDB Requirements Database BaselineRDBMS Related Database Management SystemRDC Remote Desktop ConnectionRDCS Raw Data Capture Subsystem RDPS Raw Data Processing Subsystem RDS Raw Data Subsetter

Random Access Memory or Responsibility Assignment Matrix or Resource Allocation Matrix

RDSS RCC Data Subsetter or Raw Data Subsetting SubsystemRE Requirements Engineer and Responsible EngineerREC Recovery TimeREF ReferenceREL RelativeREST Representational State TransferREQ Service Request Message or RequirementRF Radio Frequency RFA Request for ActionRFC Request for CommentsRFI Request for InformationRFID Root File IdentificationRFO Request for OfferRFP Request for ProposalRFQ Request for QuoteRFR Request for Record or Run for RecordRFS Radio Frequency SystemRG Relative GainRGB Red Green and Blue Color Value RH Red-HighRHC Right-Hand Circular RHCP Right Hand Circularly PolarizedRHS Right-Hand Side or Right-Hand SLORIDS Review Item DiscrepanciesRIM Risk Information Management ToolRIO Risks, Issues, and OpportunitiesRIPL Risk Identification Prompt ListRIS24 24-bit Raster Image RITSO Regional IT Security OfficerRL Red-LowRLN Resource Load NetworkRLUT Response Linearization Look Up Table

RM Requirements Management or Risk Manager or Resource ManagerRMAN Recovery ManagerRMB Risk Management BoardRMD Risk Management DatabaseRMF Risk Management FrameworkRMM Risk Mitigation ManeuversRMP Requirements Management Plan or Risk Management PlanRMR Risk Management RecordRMS Root-Mean-Square or Risk Management SystemRMSE Root Mean Square ErrorRMSEr Radial Root Mean Square ErrorRMT Risk Management Tool

RN Random NoiseRO Receiving OfficerROI Return on Investment or Region of InterestROIC Read-Out Integrated CircuitROLO Robotics Lunar ObservatoryROM Rough Order of Magnitude RPC Remote Procedure Call or Rational Polynomial CoefficientRPE Rational Publishing EngineRPI Rumpin, Indonesia Ground StationRPM Revolutions per MinuteRPS Radiometric Processing Subsystem RR Readiness ReviewRRAS Routing and Remote Access ServicesRRB Reduced Resolution BrowseR-S Reed-SolomonRSA Rivest-Shamin-AdlemanRSB Remote Sensing BranchRSD Remote Sensing DivisionRSDO Rapid Spacecraft Development OfficeRSDP Rapid Spacecraft Development OfficeRSPP Robotic System Protection PlanRSR Relative Spectral Responses

RSS Reuse Subsystem or Really Simple Syndication or Rich Site SummaryR/T Receive/TransmitRT Real TimeRTA Roof Top Antenna RTC Remote Telemetry and Command Unit RTCS Relative Time Command Sequence RTF Rich Text FormatRtoO Research-to-Development-to-OperationsRTS Relative Time SequenceRTT Round Trip TimeRTTM Requirements-To-Test MatrixRVM Requirements Verification MatrixRWA Reaction Wheel AssemblyRX ReceiveS&O Search and Order

SASAA South Atlantic AnomalySA-AC Storage Archive - Archive CacheSaaS Software as a ServiceSAC Satellite Application Centre (South Africa) SADD System Algorithm Description Document

Spacecraft Analyst or Single Access or Systems Administrator or Storage and Archive Subsystem or System Architect

SAG System Administrator GuideSAGUI Storage and Archive Graphical User InterfaceSA-IC Storage and Archive – Internal CacheSAIC Science Applications International Corporation SAM Scan Angle Monitor or Storage Archive ManagerSAMP Software Acquisition Management PlanSAN Storage Area NetworkSANS System Administration, Networking, and Security InstituteSAP Systems Applications and Products or Software Assurance PlanSA-PC Storage Archive - Processing CacheSAPMSO Space Asset Protection Mission Support OfficeSARR Security Assessment Response ReportSAS Serial Attached SCSI or Solar Array SimulatorSAT Site Acceptance TestingSATA Serial Advanced Technology AttachmentSATO Science Algorithms to OperationsSAW Systems Analysis WorkgroupSBAF Spectral Band Adjustment FactorSBC Single Board ComputerSBCG System Build and Configuration GuideSBG Software Build GuideSBM Serena Business Manager or Solutions Business ManagerSBRS Santa Barbara Remote Sensing SBS Subsetter SystemSBU Sensitive But UnclassifiedS/C Spacecraft SC Spacecraft or Science CampaignSCA Sensor Chip Assembly or Snow Covered Area

SCAMASCC Stress Corrosion Cracking or System Control CenterSCD Small Conversion DeviceSCDR Spacecraft Critical Design ReviewSCES Station Contract Execution SummarySCH Contact Schedule Message SCI Software Configuration ItemSCID Spacecraft Identifier SCL Signal Conditioning Unit - Lower Equipment Module SCM Software Configuration ManagementSCN Scan SCP Standard Controls Processor or Secure Copy Protocol

SCR

SCS

Switching, Conferencing, and Monitoring Arrangement or Station Conferencing and Monitoring Assembly

System Concept Review or Software Configuration Request or Standard Collection RequestScan-Correlated Shift or Satellite Checkout Station or NOAA/IPO Space and Communications Segment

SCSI Small Computer Software InterfaceSCTR Special Calibration Test RequirementsSD South Dakota or Scan DirectionSDAT Special Data Acquisition ToolSDD Software Design DocumentSDDS Seamless Data Distribution SystemSDF Software Development File SDLC System Development Life CycleSDLT Super DLT SDM Silo Data ManagerSDMP Software Development Management PlanSDN South Dakota Network

SDP

SDPSSDR System Design ReviewSDS Scientific Data Set SDU Service Data UnitSDVF Software Development and Validation FacilitySDW Seamless Data WarehouseSE Systems Engineer or Systems EngineeringSEB Source Evaluation BoardSED Software Engineering Department SEE Single-Event Effect or Science Execution EnvironmentSEI Software Engineering Institute SEIT System Engineer Integration and TestSEL Single-Event Latchup or Software Engineer LeadSELC System Engineering LifecycleSelfDef Self-Defining CMDA formatSEM Security Engineered MachineSEMP Systems Engineering Management PlanSET Systems Engineering TeamSEU Single Event Upset - Anomaly Event SEV Severity or Sun-Earth-Vehicle angle SF Service FrameworkSFBME Short Form Brouwer Mean ElementSFC Scene Framing ComponentSFCG Space Frequency Coordination GroupSFFT Short Form Functionality TestingSFTP SSH File Transfer ProtocolSGDAWG Space to Ground Data Acquisition Working Group

SGI Silicon Graphics Incorporated or Shadnagar, India Ground StationSGICD Space to Ground Interface Control Document

Software Development Plan or Science Data Production or Science Data ProcessingSupport Data Processing Subsystem or Science Data Processing Segment

SGP4 Simplified General PerturbationsSGS Svalbard Ground Station or Svalsat Ground StationSg/SG6 Svaldbard Ground StationSGT Stinger Ghaffarian TechnologiesSHA Secure Hash AlgorithmShapelib Shapefile LibrarySHC Shutter Histogram CharacterizationSHS Second Half Scan SHSERR Second Half Scan Error

SISIAT Spectral Image Annotation TapeSIC Spacecraft Identifier CodeSID Searchable Inventory Database or System IDSIEM Security Information and Event ManagementSIFMT Scene to Interval to File Mapping TableSIG Signaling SIP Standard Internet ProtocolSIPS Science Investigation Processing System

SIR

SIRCUSSIRU Scalable Inertial Reference UnitSIS Science Information System or Spacecraft Interface SimulatorSISO Subsystem Information System OwnerSISSE Senior Information System Security EngineerSITL Single Interval-In-The-LifeSITP Software Integration Test PlanSKMP System Key Management PlanSL Scan Line SLA Service Level Agreement or Scan Line ArtifactSLAM Storage Location Allocation ManagerSLAT Spacecraft Location and Attitude TapeSLATE System Level Automation Tool for EnterprisesSLC Scan Line Corrector or Software Development Life CycleSLD Scan Line Data SLI Sustainable Land ImagingSLL Scan Line Length SLO Scan Line Offset SLOC Standard Lines of CodeSLP Service Location ProtocolSLPP Summary Level Planning PackageSLS Scan Line Start SM Schedule Manager or Scan Mirror

Searchable Inventory or Space Imaging or Science Instrument or Système International

Scientific Investigations & Research or Survey Investigation and ResearchSpectral Irradiance and Radiance responsively Calibration using Uniform

SMA Safety and Mission Assurance or S-Band Multiple AccessSMAP Safety and Mission Assurance Plan SMAT System, Model, and Analysis ToolSMC Subsetter Monitor and ControllersSMD Stored Mission Data or Science Mission DirectorateSME Scan Mirror Electronics or Subject Matter ExpertSMP Software Maintenance Plan or Software Management PlanSMR Staff Management RequestSMRD Science and Mission Requirements DocumentSM RVM Science and Mission Requirements Verification MatrixSMS System Management ServerSMSR Safety and Mission Success ReviewSN Space Network SNAS Space Network Access SystemSNMP Simple Network Management ProtocolSNR Signal-to-Noise RatioSNUG Space Network User’s GuideSO Search and OrderSOA Service-Oriented Architecture or Satellite Operator AgencySOAP Simple Object Access ProtocolSOC Satellite Operations CenterSOD Seconds Of DaySOH State of HealthSOM Space Oblique Mercator SON Statement of NeedSOO Statement of ObjectivesSOP Standard Operating Procedure SORN System of Record NoticeSOS Spacecraft/Observatory SimulatorSOW Statement of WorkSP Special PublicationSPAOS Standard Product Automatic Ordering SystemSPARC Scalable Processor ArchitectureSPDR Spacecraft Preliminary Design ReviewSPI Schedule Performance IndexSPIM SPOT ImageSPIT Systems Performance Improvement TeamSPITL Scheduling Period In The LifeSPL Software Project Lead

SPOC

SPOT Satellite Pour l'Observation de la Terre (Satellite for Earth Observation)SPR Software Problem ReportSPSR System Pre-Ship Review

Service-Oriented Architecture (SOA) Proof of Concept or Security Point of Contact

SPVM System Performance Verification MatrixSPVP System Performance Verification PlanSQA Software Quality AssuranceSQAP Software Quality Assurance PlanSQL Structured Query LanguageSQMS Software Quality Management SystemSQPSK Staggered Quadrature Phase Shift KeyingSQRT Square RootSR System Review or Surface Reflectancesr steradian SRB Schedule Review Board or Standing Review BoardSRD System Requirements Document SRI Standard Robot InterfaceSRLUT Spectral Radiance Look Up TableSRM Silo Resource ManagerSRO Systems Review OfficeSRP Systems Review Plan

SRR

SRSSRT Systems Review Team or Siracha, Thailand Ground Station

SRTM SRV SUBETTER_REQUEST_ViewSS Space Segment or System Support or Signal StrengthSSA S-Band Single Access or Space Situational AwarenessSSCL Standard System Control ListSSD Subsystem Design DocumentSSERB Systems Support Engineering Review BoardSSG System Support GroupSSH Secure ShellSSHGS Secure Shell Gateway ServiceSSI Sensitive Security InformationSSIP System Safety Implementation PlanSSL Secure Socket LayerSSM Scene Select Mechanism or Scene Select MirrorSSO Single Sign-OnSSoH Stored State of HealthSSOP Security Standard Operating ProcedureSSP System Security Plan or Satellite Support PlanSSPA Solid State Power Amplifier SSP-MSO Space System Protection - Mission Support OfficeSSPP Systems Safety Program PlanSSR Solid State Recorder or Software Specification Review

System Readiness Review or System Requirements Review or Software Requirements ReviewSoftware Requirements Specification or System Requirements Specification

Software Requirements Traceability Matrix or Shuttle Radar Topography Mission

SSRR Spacecraft System Requirements ReviewST System TestSTC System Test CaseSTD StandardSTDEV Standard DeviationSTDMP Simulated and Test Data Management PlanSTDN Spaceflight Tracking and Data Network STE System Test EquipmentSTESR System Test Execution Summary ReportSTF System Transfer FunctionSTIG Security Technical Implementation GuideSTIM StimulusSTK StorageTekSTP System Test PlanSTR System Test Report or Special Task ReportSTS Scene Transmit ScheduleSTSS Synchronize to Secondary ServerSTV Spacecraft Transportation VechicleSUI Subsetter Operator User InterfaceSUM SummarySUN Sun Microsystems, Inc.SV Space Vehicle, Schedule Variance, or SubversionSvalSat Svalbard Satellite StationSVN Sun-Vehicle-Normal angle or SubversionSVT Site Verification TestSVVP System Verification and Validation PlanS/W SoftwareSW Switch or SoftwareSWD Software DevelopmentSWIR Short Wavelength Infrared SWOT Strength, Weakness, Opportunity, and ThreatSZA Solar Zenith AngleT Temperature T1 Tower 1T2 Tower 2T382 Triangular 382T&A Trending and Analysis or Trending & ArchiveT&C Telemetry and CommandTAI International Atomic TimeTAMR Telemetry Archive Metrics ReportTAP Technical Assessment PanelTAR Tape ArchiverTAT Turn-Around-Time TB TerabyteTBC To Be Confirmed

TBD To Be Determined TBR To Be Resolved or To Be Reviewed or To Be Refined

TBSTC0AOS TIRS Collection 0 Automatic Ordering SystemTC1AOS TIRS Collection 1 Automatic Ordering SystemTC Test CaseTCDC Total Cloud CoverTDEA Triple Data Encryption AlgorithmTCP Transmission Control Protocol or Technology Control PlanTCPI To Complete Performance IndexTCP/IP Transmission Control Protocol/Internet Protocol TCS Thermal Control SubsystemTCXO Temperature-Compensated Crystal OscillatorTDF Tracking Data Formatter or Time-Dependent FactorTDI Time Delay IntegrationTDR Test Discrepancy Report TDRS Tracking and Data Relay SatelliteTDRSS Tracking and Data Relay Satellite System TDT Terrestrial Dynamical TimeTDY Temporary DutyTE Test EngineerTEM Technical Exchange MeetingTERSS Tasmanian Earth Resources Satellite Station Consortium TESR Test Execution Summary ReportTFA Two-Factor AuthenticationTFF TIRS Free FlyertHC The Hammers CompanyTIC Trusted Internet ConnectionTID Total Ionizing DoseTIFF Tagged Image File Format TIM Technical Interchange Meeting or Technical Issue MemorandumTIR Thermal InfraredTIRS Thermal Infrared Sensor or Thermal Infrared ScannerTIRS-2 Thermal Infrared Sensor -2TIS Thermal Infrared SensorTLE Two-Line Element TLM TelemetryTLS Transport Layer SecurityTM Thematic Mapper or Traverse Mercator or Task ManagerTM-A Thematic Mapper - Archive Format

TMACSTMIAS Thematic Mapper Image Assessment SystemTML Total Mass Loss

To Be Submitted or To Be Supplied or To Be Specified or To Be Scheduled

Thematic Mapper and Multispectral Scanner Archive Conversion System

TM-R Thematic Mapper - Raw FormatTMR Thermal Mapper RawTMS Training Management SystemTMSR TSSC Monthly Status ReportTMSS TM SubsetterTNOS Tromoso Network Operations CentreTNS Transport Network SubstrateTO Task Order or Terrain OcclusionTOA Top of AtmosphereTOR Terms of ReferenceTP Task PlanTPL Telemetry Packetization Layer TPM Technical Performance MeasuresTPS Test Procedure SpecificationTQCM Thermoelectric Quartz Crystal MicrobalancTRAM Tracking, Routing, and MetricsTRAMAOS Tracking, Routing, and Metrics Automatic Ordering SystemTRD Technical Requirements DocumentTREES Tropical Ecosystem Environment Observations by SatelliteTRN Technical Redirection NoticeTRR Test Readiness ReviewTRT Transition Readiness TestTSI Honeywell Technology Solutions Inc.TSR Technical Service RequestTSSC Technical Support Services ContractTST Technical Support TeamTT Terrestrial TimeTT&C Telemetry, Tracking, and ControlTT&E Test, Training, and ExerciseTTF TIRS Test FacilityTTL Transistor-Transistor LogicTTMS TSSC Task Management SystemTTOR Transition To Operations ReviewTTPs Tactics, Techniques, and ProceduresTURFTS TDRS Users RF Test SetTUTR Tunable Universal Track ReceiverT/V Thermal/VacuumTVAC Thermal VacuumTWITL Total WRS-2 In The LifeTWM Task and Work ManagementTWTA Traveling-Wave Tube AmplifierUAC User Account ControlUAF University of Alaska, FairbanksUAR Update as RequiredUB Undistributed Budget

U/C Up ConverterUDP Upper Data Point or User Datagram ProtocolUDT UDP Data TransferUG User's Guideuhd User's Home DirectoryUI User Interface UIC User Interface CompileUID Unique IdentifierUIS USGS Inventory ServerU/L Uplink UL Upper Left UM Unified MessagingUML Unified Modeling LanguageUNEP United Nations Environment Programme

UNIXunixODBC Unix Open Database ConnectivityU/P Uplink Processor UP User Portal SystemUPE User Portal ElementUPS Uninterruptible Power Supply or Universal Polar StereographicUQPSK Unbalanced Quadrature Phase-Shift KeyingUR Upper Right or User RequestURL Uniform Resource Locator URP User Request ParametersURS User Registration SystemUS United States USAF United States Air ForceUSAID U.S. Agency for International DevelopmentUSB Universal Serial BusUSC United States CodeUSDA U.S. Department of Agriculture USG U.S. Government USGS U.S. Geological Survey USML United States Munitions ListUSNO U.S. Naval ObservatoryUSPS U.S. Postal ServiceUSSTRATCOM U.S. Strategic CommandUT Universal Time or Unit TestUT1 UTC Corrected UTC Universal Time Code or Coordinated Universal TimeUTM Universal Transverse Mercator V&V Verification and ValidationVA Veteran AdministrationVAC Variance at Completion

Bell Laboratories trademark for operating system language and time sharing

VAFB Vandenburg Air Force Base VAL ValidationVAP Value Added ProcessorVAR Value-Added Resellers or Variance Analysis ReportVC Virtual ChannelVC63 Virtual Channel 63VCA Virtual Channel Access VCDU Virtual Channel Data Unit VCID Virtual Channel Identifier or Virtual Channel IdentificationVCLC Virtual Channel Link Control VDD Version Description Document VDP Validation Data ProductsVER Version VF Valley Forge VIIRS Visible Infrared Imager / Radiometer Suite VIS Visual Information SystemsVisID Visual IdentificationVLAN Virtual Local Area NetworkVLUT Vendor Look Up TableVM Version Manager VMS Virtual Memory StorageVNIR Visible and Near Infrared VO Verification OwnerVOI Value of InformationVOIP Voice Over Internet ProtocolVPN Virtual Private Network VQA Visual Quality AssuranceVRM Verification Requirements MatrixVRP Video Reference PixelVRS Vertical Resampling SpaceVSWIR Visible to Short Wavelength InfraredVTL Verification Tracking LogVTP Verification Test ProceduresVVP Verification and Validation PlanW3C World Wide Web ConsortiumWA Work AuthorizationWAD Work Authorization DocumentWAN Wide Area NetworkWB Wideband WBDR Wideband Downlink ReportWBM Wide-Band ModuleWBS Work Breakdown StructureWBV Wide Band VideoWBVT Wide Band Video TapeWC Worst Case

WCS Web Coverage ServicesWDCD Wideband Data Capture DeviceWELD Web-Enabled Landsat DataWFS Web Feature ServicesWG Working GroupWGCV Working Group for Calibration and ValidationWGS World Geodetic System or Wallops Ground StationWGS84 World Geodetic System 1984WILMA Wide Long Term Multi-Satellite ArchiveWIP Work In ProgressWITL WRS2-In-The-LifeWLS Weighted Least SquareWMS Web Mapping ServicesWO Work OrderWORS Wallops Orbital Tracking Station WOTIS Wallops Orbital Tracking Information Systems WP Work Plan or Work PackageWPS Wallops Ground StationWR Western RangeWRS Worldwide Reference System WRS-2 Worldwide Reference System-2WRS2TT Worldwide Reference System-2 to Time TranslationWRS2TTT Worldwide Reference System-2 to Time Translation TableWSC White Sands Complex WSDL Web Service Definition LanguageWSGT White Sands (NASA) Ground Terminal WS-I Web Services InteroperabilityWVTCS Wideband Video Tape Conversion SystemWWW World Wide Web XIB Transmitter Interface BoardXML Extensible Markup Language XS Multispectral SPOT SensorXSD XML Schema DefinitionXTX X-Band Transmitter YGC Yaw Gyro Compassing YH Yellow-HighYL Yellow-LowYSF Yaw Steering FrameYTD Year-To-DateZ Zulu time (same as GMT) ZB ZettabyteZFS Zettabyte File System