Previous Mars landers have been able to land only within tens to hundreds of km of a target site. Principal sources of uncertainty are approach navigation, atmospheric modeling, and vehicle aerodynamics; additional (lesser) uncertainty sources are map-tie error and wind drift. The Mars Science Laboratory mission scheduled for 2009 launch will use guidance during hypersonic entry to improve this to /spl sim/10 km. To achieve "pinpoint landing" (within 100m) for future missions, ways of addressing the remaining error sources (approach navigation, wind drift and map-tie error) must be found. This work defines a "reference system design" for guidance, navigation, and control in future pinpoint landing missions, and assesses uncertainties and performance penalties associated with pinpoint landing using this reference system design.


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    Title :

    Performance trades for Mars pinpoint landing


    Contributors:
    Wolf, A.A. (author) / Tooley, J. (author) / Ploen, S. (author) / Ivanov, M. (author) / Acikmese, B. (author) / Gromov, K. (author)

    Published in:

    Publication date :

    2006-01-01


    Size :

    4305107 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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