Abstract This paper derives an approach to combine estimates and covariances for decentralized attitude estimation using a quaternion parameterization. The approach is based on the covariance intersection method, which is modified to maintain quaternion normalization in the combination process. A practical simulation result is provided where local extended Kaiman filters are used on two star trackers, each running with common gyro measurements. The covariance intersection approach is shown to provide more accurate estimates than either of the local filters.


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    Title :

    Decentralized Attitude Estimation Using a Quaternion Covariance Intersection Approach


    Contributors:


    Publication date :

    2009




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    Local classification TIB:    770/7040
    BKL:    55.60 Raumfahrttechnik



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