A sequential filtering algorithm is presented for spacecraft attitude and attitude-rate estimation from Global Positioning System (GPS) differential carrier phase measurements. A third-order, minimal-parameter method for solving the attitude matrix kinematic equation is used to parameterize the state of the filter, which renders the resulting estimator computationally efficient. Borrowing from tracking theory concepts, the angular acceleration is modeled as an exponentially autocorrelated stochastic process, thus avoiding the use of the uncertain spacecraft dynamic model. The new formulation facilitates the use of aiding vector observations in a unified filtering algorithm, which can enhance the robustness and accuracy of the method. Numerical examples are used to demonstrate the performance of the method.
Spacecraft attitude/rate estimation using vector-aided GPS observations
IEEE Transactions on Aerospace and Electronic Systems ; 35 , 3 ; 1019-1032
01.07.1999
709274 byte
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Spacecraft Attitude/Rate Estimation Using Vector-Aided GPS Observations
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