The currently known algorithms for inflight magnetometer-bias determination without knowledge of the attitude are examined. The majority of these are shown to be limited either by poor convergence properties, significant statistical or analytical approximations, or the discarding of important data. The most robust and accurate of these algorithms is TWOSTEP, an algorithm recently developed which combines the best properties of the existing algorithms. Comparisons of algorithm performance are made both for spinning and inertially stabilized spacecraft. While TWOSTEP performs well in all cases, many of the other algorithms do not converge to the globally optimal estimate of the magnetometer-bias vector or even diverge.


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    Title :

    Attitude-Independent Magnetometer-Bias Determination: A Survey


    Additional title:

    J of Astronaut Sci


    Contributors:

    Published in:

    Publication date :

    2002-12-01


    Size :

    23 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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