by
Thomas Duxbury
Physics and Astronomy Department George Mason University
Fairfax, VA, USA
presented at the
Small Bodies Assessment Group 16th Meeting
University of Arizona Tucson, AZ
12 January 2017 17:00
INTERNATIONAL PHOBOS/DEIMOS LANDING SITE WORKING GROUP
12 Jan 2017 1
SOME NASA SMD PSD GOALS FOR PHOBOS AND DEIMOS
• SUPPORT THE JAXA MARTIAN MOON EXPLORATION PROJECT (MMX) (SEE PREVIOUS PRESENTATION)
– PROVIDE US INSTRUMENT FOR MMX • AO TO BE LET
– ENCOURAGE, SUPPORT AND PRODUCE HIGHER-LEVEL, DERIVED DATASETS TO SUPPORT MISSION DESIGN, SURFACE CHARACTERIZATION, SITE SELECTION, MISSION OPERATIONS AND FLIGHT DATA / SAMPLE CONTEXT
– ENCOURAGE NEW TYPES OF OBSERVATIONS ON EXISTING MISSIONS • FOCUS DATASETS FOR MMX BUT BE EQUALLY APPLICABLE/USEABLE FOR OTHER
MARTIAN MOON MISSIONS UNDER STUDY – NASA DISCOVERY / NEW HORIZONS – ESA PHOOTPRINT – ROCOSMOS BOOMERANG – OTHER
• INSURE THAT DERIVED DATASETS ARE COMPATABLE WITH NASA STUDY TOOLS, E.G., LMMP TREK GIS TOOL (JPL/ARC), BY DEFINING DATA STANDARDS
12 Jan 2017 2
CREATION OF PDLSWG
• SPLINTER MEETING AT 7TH MOSCOW SOLAR SYSTEM SYMPOSIUM (7M-S3) – ORGANIZED BY ESA MARS EXPRESS IDS FOR PHOBOS/DEIMOS AND PROJECT
SCIENTIST – NASA PSD, JAXA, ESA AND ROSCOSMOS AGENCY AND SCIENCE PERSONNEL
PARTICIPATED – IDENTIFIED EXISTING / CONTINUING DATASETS CRITICAL TO MMX AND
OTHER PHOBOS/DEIMOS MISSIONS – IDENTIFIED USEFUL NEW DATA POSSIBLE FROM EXISTING MISSIONS – IDENTIFIED DATA THAT FUTURE MISSIONS WOULD NEED TO COLLECT
THEMSELVES
• AGENCY / PERSONNEL CREATED THE INTERNATIONAL PHOBOS / DEIMOS SURFACE CHARACTERIZATION / SITE SELECTION WORKING GROUP – “PDLSWG” FOR SHORT
12 Jan 2017 3
EXAMPLES OF MAJOR ENGINEERING DATASET REQUIREMENTS FOR LANDING SITE SELECTION
• EARTH COMMUNICATIONS / SOLAR LIGHTING – MOON EPHEMERIDES – MOON ROTATION MODEL – MOON DIGITAL TERRAIN MODEL (DTM)
• GLOBAL AND LOCAL SURFACE TOPOGRAPHY / SLOPES / BOULDERS
– MOON GLOBAL DIGITAL TERRAIN MODEL – LOCAL SITE HIGH RESOLUTION DTM – BOULDER SIZE-FREQUENCY DISTRIBUTION
• THESE DATASETS WOULD ALSO SUPPORT MISSION PLANNING AND FLIGHT
OPERATIONS AS WOULD THE PHOBOS MASS MEX MaRS – PHOBOS GRAVITY FIELD WOULD NEED TO BE DETERMINED BY THE FLIGHT
PROJECT
12 Jan 2017 4
MEX HRSC / SRC STEREO AND ASTROMETRIC IMAGES
MEX HRSC / SRC STEREO AND HIGH RESOLUTION IMAGES
EXAMPLE OF MAJOR PHOBOS/DEIMOS SCIENCE DATASET REQUIREMENTS FOR LANDING SITE SELECTION
• GLOBAL SURFACE CHARACTERIZATION – MINEROLOGY / COMPOSITION – TEMPERATURE / THERMAL INERTIA – AGE / FRESH CRATERS / GEOLOGICAL CONTEXT – REGOLITH THICKNESS / PARTICLE SIZE / COMPACTNESS / ELECTROMAGNETIC ENVIRONMENT – NEAR MOON DUST ENVIRONMENT
• OTHER
12 Jan 2017 5
OMEGA/SPICAM/PFS/MAVEN/ THEMIS DAYTIME / NIGHTTIME IR AND UV GLOBAL SPECTRA AND HRSC COLOR IMAGES
TBD MEX ASPERA
MEX HRSC-DERIVED PHOBOS DTM
12 Jan 2017 6
DLR/TUB
DATASET STATUS • PHOBOS GLOBAL HRSC/SRC DTM EXISTS AND IS CONTINUALLY BEING IMPROVED • LOCAL HIGH-RES LANDING SITE DTMs DO NOT EXIST AND MAY NOT BE POSSIBLE PRE-
LAUNCH BECAUSE METER-SUBMETER HRSC/SRC RESOLUTION DOES / WILL NOT EXIST • PHOBOS / DEIMOS EPHEMERIS/ROTATION MODELS EXIST/CONTINUALLY BEING IMPROVED • OMEGA / SPICAM / PFS MULTISPECTRAL UV / IR REGISTERED & MAP PROJECTED DATASETS
HAVE YET TO BE PRODUCED • PHOBOS GLOBAL HRSC COLOR DIM HAS YET TO BE PRODUCED • MEX PROPOSES TO CONTINUE PHOBOS / DEIMOS EXPLORATION AS A HIGH PRIORITY • THEMIS IR / VIS DAYTIME AND NIGHTIME OBSERATIONS ARE BING PLANNED • MAVEN IUVS OBSERVATIONS “BONUS” SCIENCE – PROJECT WILL NOT REDUCE
12 Jan 2017 7
SEARCHABLE CATALOG STATUS
• A SEARCHIBLE VIKING/MEX DATA CATALOG OF GEOCODED PHOBOS / DEIMOS MAP COORDINATES, NAMED FEATURES, VIEWING & LIGHTING GEOMETRY, SPATIAL RESOLUTION, ORBITAL POSITION, MARS LIGHTING ANGLE, . . . DOES NOT EXIST
12 Jan 2017 8
GLOBAL HRSC AND OMEGA COLOR / MULTISPECTRAL REGISTERED AND
MAP-PROJECTE DATASETS DO NOT EXIST
12 Jan 2017 9
EXAMPLE REGISTERED/MAP-PROJECTED GLOBAL DATA PRODUCTS
• REGISTRERING VIKING AND HRSC/SRC IMAGES TO DTM WITH COMMON MAP PROJECTION STANDARD AND DERIVATION OF STEREO ANAGLYPH DATASETS DO NOT EXIST
12 Jan 2017 10
EXAMPLE REGISTERED / MAP-PROJECTED GLOBAL DATA PRODUCTS
12 Jan 2017 11
ANCILLARY DATASET STATUS
• VIKING AND HRSC / SRC THUMBNAIL SUMMARY IMAGES DO NOT EXIST
12 Jan 2017 12
EXAMPLE OF NEW, DERIVED DATASET
• MEX SRC POINT SPREAD FUNCTION FOR IMAGE RESTORATION EXISTS BUT NEEDS IMPROVEMENT
• NEW HIGHER LEVEL IMAGE PRODUCT COULD BE DERIVED DURING IMAGE RESTORATION (FAR RIGHT)
12 Jan 2017 13
DATASET STATUS • MOSAICKING OF INDIVIDUAL VIKING AND SRC PHOBOS IMAGES, TAKEN
DURING FLYBY SEQUENCES INTO ONE IMAGE, DOES NOT EXIST
12 Jan 2017 14
PDLSWG
– ENCOURAGE, SUPPORT AND PRODUCE HIGHER-LEVEL, DERIVED DATASETS TO SUPPORT MISSION DESIGN, SURFACE CHARACTERIZATION, SITE SELECTION, MISSION OPERATIONS AND FLIGHT DATA / SAMPLE CONTEXT
– ENCOURAGE NEW TYPES OF OBSERVATIONS FROM EXISTING MISSIONS
– INFORM SCIENCE COMMUNITY OF ACTIVITIES / STATUS
– CONVENE / SUPPORT PROJECT-FOCUSED MEETINGS
• INCLUDE AS PART OF JAXA MMX, ESA MEX, ETC. MEETINGS
12 Jan 2017 15
Top Related