Abstract
After the Beagle-2 lander of the Mars Express mission comes to rest on the surface of Isidis Planitia in late December 2003 to carry out a range of geochemistry and exobiology experiments, there will be considerable interest in determining its exact location. This work considers the feasibility of identifying topographic features seen in the Mars Global Surveyor MOLA dataset in images of the horizon returned by the lander, and the probability of observing lesser features identifiable in orbital imagery. By taking bearings from such features, and attempting to match the configuration back to the available data, it may be possible to determine the spacecraft's position with high precision. Since the MOLA data is fairly coarse compared to the area of the landing ellipse, the range of visibility and likelihood of observation of each of the resolved craters in the area is considered. For the more numerous smaller craters and many small knobs a probabilistic view is taken.
Published Version
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