Landsat 7

Landsat 7 / Enhanced Thematic Mapper Highlights

• Based on the Thematic Mapper instruments of Landsats 4, 5

• New Panchromatic Band with 15m spatial resolution

• New 375 Gb (100 scene) on board solid state recorder

• New on board, full aperture, 5% absolute radiometric calibration

• Improved Thermal IR channel resolution from 120 to 60m

• Improved downlink rate from 85 Mbps to 150 Mbps

Bands 1 2 3 4 5 6 7

IR IR TIR IR

.45-.515 .525-.605 .63-.69 .75-.9 1.55-1.75 10.4-12.5 2.09-2.35

.9 PAN.52

Schematic

Artists Conception

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ASTER

Advanced Spaceborne Thermal Emission and Reflection Radiometer

HIGHLIGHTS

• Provides high-resolution images of the land surface, water, ice, and clouds

• 14 bands from the visible through the thermal infrared

• 3 visible bands @ 15m spatial resolution

• 1 visible stereo band @ 15m spatial resolution

• 6 short wavelength infrared bands @ 30m spatial resolution

• 5 thermal infrared bands @ 90m spatial resolution

• 60 km wide ground swath

• All Enhanced Thermatic Mapper bands are represented (except Pan)

• 10 EOS Standard Products

ASTER Instrument

VNIR

TIR SWIR

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MODIS

Moderate-resolution Imaging SpectroRadiometer

HIGHLIGHTS

• Measures a variety of biological and physical processes over land and ocean every one to two days. Makes important atmospheric measurements

• 36 band medium-resolution, multi-spectral cross-track scanning radiometer

• 2330 km wide ground swath

• 36 bands distributed between .4 and 14.5 µ m

• 2 bands imaged at 250m

• 5 bands imaged at 500m

• 29 bands imaged at 1000m

• All ETM+ bands are represented

• Impression calibration characteristics

• Large variety of valuable land products

MODIS Instrument

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MISR

Multi-angle Imaging SpectroRadiometer

HIGHLIGHTS

• Provides top-to-atmosphere, cloud, and surface angular spectral reflectance functions

• 9 individual CCD-based pushbroom cameras observe Earth at 9 discrete view angles: nadir, ± 26.1° , ± 45.6° , ± 60.0° , ± 70.5°

• Each camera images 4 bands: .443 µ m (blue), .555 (green), .670 (red), .865 (near-infrared)

• A total of 36 images are gathered simultaneously at either 275m, 550m, or 1100m

• The swath width is 360 km

• Significant Land Surface Products include: Radiance, Reflectance, Albedo, Angular Reflectance Properties, Precision Atmospheric Correction

MISR Instrument

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MISR Observing Concept

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CERES

Clouds and the Earth’s Radiant Energy System

HIGHLIGHTS

• Measure Earth’s radiation budget and atmospheric radiation from the top of the atmosphere to the surface

• Two broadband, scanning radiometers: one cross-track and one rotating plane (bi-axial scanning)

• Both radiometers have 3 bands: 0.3 to ~50µ m, 0.3 to 5 µ m, and 5 to 12 µ m

• 21 km spatial resolution at nadir

• Limb to limb swath

• 13 different cloud and radiation flux standard products

• Will provide baseline cloud and radiation flux data critical to understanding and modelling climate

CERES Instrument

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MOPITT

Measurements of Pollution in the Troposphere

HIGHLIGHTS

• Measures emitted and reflected infrared radiance in the atmospheric column to retrieve CO profiles and total column CH4

• Four channel correlation spectrometer with cross-track scanning

• 3 infrared bands located at 2.3, 2.4, and 4.7 µ m

• 22 km spatial resolution

• 616 km wide ground swath

• In addition to the L1B radiance product, key products include Total Column CO and CH4, CO profiles

• Will permit studies of spatial and temporal distributions of CO and CH4 that drive budget and source/sink studies

MOPITT Instrument

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EOSDIS Core System Architecture Drivers

Towards ... • Product “publishing” and “access”

• Seamless view of all data

• Extended provider implementation

• Heterogeneous, autonomous system components

• Scalable, extendable components

• Policy neutral

• Component reuse outside of EOSDIS

A more evolutionary system

Concepts System Data Traditional

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EOSDIS Data Flows and Elements

Non-EOS Facilities and Control Centers

(Vandenburg, NOAA, etc.)

EOS Operations Center

(GSFC)

System Monitoring and Coordination

(GSFC)

Science Computing Facilities for Product

Quality Control*

Distributed Active Archive Centers

(8 locations)

Users

(Scientists, Universities,

Gov't Agencies, Education

Institutions, etc.)

Science Computing Facilities

(Approximately 60 locations)

Non-EOS Data Sources

(GCDIS, NOAA, USGS, etc.)

Instrument Support

Terminals

Data Interface Facility

(White Sands, NM)

Data Production Facility

(Fairmont, WV)

Sustaining Engineering Facility

(GSFC)

EOSD

IS B

ackb

one

Netw

ork

Flight Operations Segment

Communications and Systems Management Segment

Science Data Processing Segment

Exte

rnal

Net

wor

ks (N

SI/N

SF)

EDOS EBNET EOSDIS Core System

EOSD

IS In

tern

al N

et

Data from other Mission Data Systems (Landsat-7, TRMM, UARS, …)

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EOSDIS System Context

•� Core Communications Services�•� Enterprise Management

Communications and Management Services

Telemetry

Level 0 data

Commands

Commands

Schedules

Science Data�Processing

EOSDIS Core SystemEOSDIS Core System

95E001-018 (V1)

EOSD

IS B

ackb

one

Netw

ork

(EBN

ET)

Exte

rnal

Ne

twor

ks

(NSI

/NSF

)

Data Interface Facility�

(White Sands, NM)

Sustaining Engineering

Facility�

(GSFC)

EDOS

Instrument

Interaction

Interaction Other�Users

Data Exchange

DataAcquisition�Requests

Algorithms

Level 0 Data

Processed Data

Schedules

History Data

•� Mission Planning/ Scheduling�

•� Spacecraft and Instrument Command & Control

•� Information Search�

•� Product Production�

•� Data Archiving�•� Data Publication

Flight Operations

Aster

Instrument Control Center

Status,�Coordination

Status,�Coordination

Science Computing Facilities

Other Missions�•� Landsat-7�•� TRMM�•� ADEOS II

Affiliated Data Centers�

International Partners

ECS External Interfaces

NSI

Internet NASA Science

ERSDAC

NASDA Partners International

EBnet

Non-EOS Ground Systems

Landsat 7

ECS Science Investigator Support

ISTs

DASSCFs

EOS S/C Ground

S/C Sim FOS

Support

EDOS

Sim/Test SMC

NCC FDD

ESIPs V0

DAACs (NOAA) ADCs

GSFC Institutional Support Data Centers

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The ECS Digital Library

Digital Libraries

Interoperability Infrastructure

Users

Extensible Client Services

Diverse User Community

FarmingEarth Science EducationFishing Forestry

Distributed Data Sources

Independent Data Sources

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Push / Pull

PlatformsPlatforms

Science Research and Analysis

PublishPublish

Information for Industry and Education

GroundSystemsGroundSystems

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Productionand Distribution

of Data

Productionand Distribution

of Data

Digital LibraryDigital Library

FOS Overview

Overall mission requirements

• Multiple mission support

- Support up to seven concurrent EOS missions

- Provide extensions for additional spacecraft and instruments

- Provide support for multi-vendor spacecraft

- Simultaneous simulations, test, development and operations

• Global visibility and distribution

- Instrument Support Terminal (IST) Software Toolkit

Provides remote access Instrument Operations Teams

Globally distributed (e.g., ASTER - Japan, MISR - JPL, MOPITT-Toronto)

• Provides integrated system solution for scheduling, real-team, and off-line functions

• Provides ability for quick access and analysis of engineering data for long term spacecraft fleet performance

• Provide automated functions to reduce operational life-cycle costs

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