international phobos/deimos landing site ......creation of pdlswg • splinter meeting at 7th moscow...
TRANSCRIPT
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