This paper describes an algorithm obtained by merging a recursive star-identification algorithm with a recently developed adaptive singular-value-decomposition-based estimator of the angular-velocity vector (QuateRA). In a recursive algorithm, the more accurate the angular-velocity estimate is, the quicker and more robust to noise is the resultant recursive algorithm. Hence, combining these two techniques produces an algorithm capable of handling a variety of dynamics scenarios. The speed and robustness of the algorithm are highlighted in a selection of simulated scenarios. First, a speed comparison is made with the state-of-the-art lost-in-space star-identification algorithm, Pyramid. This test shows that in the best case, the algorithm is on average an order of magnitude faster than Pyramid. Next, the recursive algorithm is validated for a variety of dynamic cases, including a ground-based “Stellar Compass” scenario, a satellite in geosynchronous orbit, a satellite during a reorientation maneuver, and a satellite undergoing non-pure-spin dynamics.
Recursive Star-Identification Algorithm Using an Adaptive Singular-Value-Decomposition-Based Angular-Velocity Estimator
Journal of Spacecraft and Rockets ; 58 , 4 ; 1138-1148
2021-01-29
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Adaptive Angular Velocity Estimator (AAS 09-314)
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