Re-entry navigation essentially based on GPS and INS has been analyzed and shown to be feasible. Possible problems have been identified in case of a quick departure from ISS, since without special cares timely positioning is in question. Different solutions have been proposed. During blackout intelligent (Kalman-) filter algorithms will provide sufficiently accurate navigation, even in case of relatively low initial attitude accuracy and GPS Selective Availabilty switched on. A medium accuracy INS may be accurate enough, preference is given to higher accurate systems however. Finally it has been shown by analyses and simulation that tracking of a sufficient number of satellites during the re-entry flight and a sufficiently short re-acquisition time for the GPS signal after blackout can be expected. The GPS receiver should be optimized however with regard to the flight dynamics and the initialization possibilities.


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    Title :

    Analysis of a CTV reentry navigation concept


    Additional title:

    Analyse des Navigationssystems für die Wiedereintrittsphase von bemannten Raumfahrzeugen in die Erdatmosphäre


    Contributors:


    Publication date :

    1997


    Size :

    8 Seiten, 6 Bilder, 2 Tabellen, 6 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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