Analysis of local slopes at the InSight landing site on Mars

Space Science Reviews
By: , and 

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Abstract

To evaluate the topography of the surface within the InSight candidate landing ellipses, we generated Digital Terrain Models (DTMs) at lander scales and those appropriate for entry, descent, and landing simulations, along with orthoimages of both images in each stereopair, and adirectional slope images. These products were used to assess the distribution of slopes for each candidate ellipse and terrain type in the landing site region, paying particular attention to how these slopes impact InSight landing and engineering safety, and results are reported here. Overall, this region has extremely low slopes at 1-meter baseline scales and meets the safety constraints of the InSight lander. The majority of the landing ellipse has a mean slope at 1-meter baselines of 3.2°. In addition, a mosaic of HRSC, CTX, and HiRISE DTMs within the final landing ellipse (ellipse 9) was generated to support entry, descent, and landing simulations and evaluations. Several methods were tested to generate this mosaic and the NASA Ames Stereo Pipeline program dem_mosaic produced the best results. For the HRSC-CTX-HiRISE DTM mosaic, more than 99 % of the mosaic has slopes less than 15°, and the introduction of artificially high slopes along image seams was minimized.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Analysis of local slopes at the InSight landing site on Mars
Series title Space Science Reviews
DOI 10.1007/s11214-016-0292-x
Volume 211
Issue 1-4
Year Published 2017
Language English
Publisher Springer
Contributing office(s) Astrogeology Science Center
Description 25 p.
First page 109
Last page 133
Online Only (Y/N) N
Additional Online Files (Y/N) N