The Mars Science Laboratory, also called Curiosity, is a rover mission that launched on 26 November 2011 and landed on Mars 6 August 2012 in Gale Crater. The main challenges for the interplanetary navigation of the mission were to deliver the spacecraft to the correct interface point above the atmosphere of Mars and to accurately tell the spacecraft where it was as it entered the atmosphere. The spacecraft used guidance during its descent to Mars before the deployment of the parachute in order to minimize landing dispersions, resulting in a smaller landing zone that was closer to terrain of high scientific interest. This required an accurate delivery of the spacecraft to the entry interface and an update of the spacecraft state at entry, which was used to initialize the descent guidance system. Orbit determination during cruise was very accurate, being able to predict the line-of-sight position of the spacecraft after one week to within a few meters during the final weeks of approach. The spacecraft hit the top of the Martian atmosphere just 200 m from where it had been predicted to enter more than six days earlier, when it was still 2.6 million km away from Mars. This excellent level of accuracy was achieved by a combination of factors, including spacecraft characteristics, tracking data processing, dynamical modeling choices, and navigation filter setup. The accurate interplanetary navigation contributed to the very precise landing performance and to the overall success of the mission.


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    Titel :

    Mars Science Laboratory Interplanetary Navigation


    Beteiligte:
    Martin-Mur, T. J. (Autor:in) / Kruizinga, G. L. (Autor:in) / Burkhart, P. D. (Autor:in) / Abilleira, F. (Autor:in) / Wong, M. C. (Autor:in) / Kangas, J. A. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2014-05-08


    Format / Umfang :

    15 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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