The instrument pointing subsystem (IPS) is a three-axis stabilized platform developed to point various astronomical observation instruments aboard NASA's shuttle. In order to compensate for system drifts and attitude errors, the IPS utilizes a linearized Kalman filter (LKF) with precomputed gains. Since the a priori gains are generated for an expected system configuration, any system variations result in a suboptimal estimation process. The performance of two real-time estimation filters is compared with that of the current LKF implementation. It is shown that a real-time estimation filter that reduces sensitivity to system variations and preflight computations is feasible.
An optimal recursive filter for the attitude determination of the spacelab instrument pointing subsystem
Ein optimales Rekursivfilter für die Lagebestimmung des Spacelab-Meßanzeige-Untersystems
Proceedings of the 28th IEEE Conference on Decision and Control ; 2 ; 1800-1802
1989
3 Seiten, 11 Quellen
Aufsatz (Konferenz)
Englisch
The spacelab instrument pointing subsystem (IPS) and its utilization
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