This paper contains a critical comparison of estimators minimizing Wahba’s loss function. Some new results are presented for the QUaternion ESTimator (QUEST) and Estimators of the Optimal Quaternion (ESOQ and ESOQ2) to avoid the computational burden of sequential rotations in these algorithms. None of these methods is as robust in principle as Davenport’s q method or the Singular Value Decomposition (SVD) method, which are significantly slower. Robustness is only an issue for measurements with widely differing accuracies, so the fastest estimators, the modified ESOQ and ESOQ2, are well suited to sensors that track multiple stars with comparable accuracies. More robust forms of ESOQ and ESOQ2 are developed that are intermediate in speed.


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    Title :

    Quaternion Attitude Estimation Using Vector Observations


    Additional title:

    J of Astronaut Sci


    Contributors:

    Published in:

    Publication date :

    2000-06-01


    Size :

    22 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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    Quaternion Attitude Estimation Using Vector Observations

    Markley / Mortari / American Astronautical Society | British Library Conference Proceedings | 2000


    Attitude determination from vector observations: quaternion estimation

    Bar-Itzhack, I.Y. / Oshman, Y. | Tema Archive | 1985