or Why you cant land or rove on Mars without a Map Matt Golombek amp Fred Calef III JPL All images this slide NASAJPLCaltech LPSC March 20 2013 Planetary Mapping and Cartography ID: 316776
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Slide1
Mars Science Laboratory Landing Site MappingorWhy you can’t land (or rove) on Mars without a Map
Matt
Golombek & Fred Calef IIIJPL
All images this slide: NASA/JPL-Caltech
LPSC March 20, 2013
Planetary Mapping and Cartography,
What, When, How, Why?Slide2
VL1
MPF
Opportunity
VL2
Spirit
Landing Sites on Mars
Phoenix
Curiosity
Elevation Matters – Amount of Atmosphere to Slow Down
All Sites at Low Elevation
Latitude Matters – Solar Power; Thermal/power
Target Materials (e.g., ice)
MOLA is Base Map
Cartographic &
Inertial FramesSlide3
MSL Science Criteria
MSL Safety Criteria
MSL Science and Safety Constraints:
<25°
<100
m
0.5% CFA <7%
3/20/133
Golombek, Landing Site Selection
Remove these constraints
1
m
to 1000
mSlide4
DEMsComplete CTX DEM Coverage for Radar Interactions5-6 HiRISE DEMs to Cover EllipseKirk et al. [2011]Complete Slope Map (1-5 m)
HiRISE 1 m/elevation postings
CTX ~20 m/elevation postingsHRSC 50 m/elevation postingsGwinner
et al. [2010]
Hierarchical co-registration
Kim & Muller [2009] PSSSlide5
CTX DEMExample CTX DEM 25 m/elevation posting for Radar InteractionComplete Coverage of EllipseSlide6
Gale 1 m Slope Map
TouchdownStabilityTrafficabilitySlide7
9/29/10Golombek et al. Rocks7
VL2
South
North
PSP_1501_2280
400x400 pixels
124x124 meters
1.5 hectares
VL2
HiRISE
Changed Everything
Can
See Rocks Directly in
HiRISE
Correlate
Large Rocks in
HiRISE
with those Seen from Lander at All Landing SitesMeasure same size-frequency distribution at surface; follow models from surface
Golombek et al. [2008]Slide8
Gale Rock Map8
Golombek, MSL Data Products
Size-Frequency Distribution Rocks in 450 m binsFit to Model Size-Frequency Distribution for
CumulativeFractional Area from 1 - 40%
Calculate Probability of Success for All Rock Sizes
Rocks and Slopes-Touchdown Simulations
Golombek
et al. [2012]Slide9
Thermal Inertia
Gale
Thermal InertiaMaterial PropertiesFergason
et al. [2012]Slide10
Gale CraterBlue: Unconsolidated eolilan bedforms
Green: Eolian thin cover over indurated
alluviumYellow: Indurated alluviumRed: Indurated or cemented flat-lying unit
11/16/10
10
Surface Material PropertiesSurface Materials
Fergason
et al. [2012]Slide11
Blue=CraterPink=Mesa*=Probably Escapable**=Inescapable
Gale Potential Inescapable
HazardsGolombek et al. [2012]Slide12
Gale ID. 17**Crater, 400
m
diameter15 to
30° Slopes
Loose material on interior slopes, bedforms on floor
232084 m2137.548, -4.463
I
nescapableCoverage shows >15 ° slopes and loose material around entire crater interior
No obvious egress routeBedforms are likely traversable
Only 2 Inescapable
Craters
Cover 0.13% of Ellipse
Golombek
et al. [2012]Slide13
13
Cratered Plains – No obvious Mobility ConcernsDark DunesAppear FreshMany Exceed 30°Mobility
ImpedimentSample Strata HereDrive up CanyonHereCan Access Mineral Strata in CRISMCan drive up mound
Gale
Crater
“
Go To” Traversabilty
5/12/11Slide14
Gale Traverse Routes
Paolo
BelluttaIn Golombek et al. [2012]
From
TopographyRocks& Material Properties Slide15
Overview of Dunes
5/12/1115
Golombek et al. [2012]Slide16
SW Routes Through Dunes
5/12/1116
Golombek et al., MSL Data ProductsGolombek et al. [2012]Slide17
Traverse Routes in Lower Mound
First fence
Secondfence
Canyon 1Not Fan
First fence
Second
fence
Canyon 1Not Fan
Canyon 2
Clay layer
Canyon 2
Clay layer
5/12/11
17
Golombek et al., MSL Data ProductsSlide18
This completes the M. Golombek portion of the presentation. The presentation by F. Calef will be added to this and posted at a later date. (2013 April 2)