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Pointing-Stability Performance of the Cassini Spacecraft by Emily B. Pilinski; Allan Y. Lee is a Engineering article available to read on EtoBox.

What is Pointing-Stability Performance of the Cassini Spacecraft about?

The operations of Cassini optical remote sensing instruments require a high level of spacecraft-pointing stability to minimize image distortion during an exposure window. This paper summarizes the flight performance of the Cassini spacecraft's pointing stability with respect to mission requirements. Sources of spacecraft jitter, the Cassini spacecraft control modes, and pointing-stability metrics are discussed to provide a context for the results. In designing the Cassini attitude-control system, a pointing-stability performance metric that considered the frequency contents of the disturbance sources was employed. Cassini pointing-stability results using the root-mean-square stability metric are provided for both spacecraft control modes, using the reaction-wheel assembly or the reaction control system composed of eight thrusters. The pointing-stability results are then related to characteristics of the spacecraft and operations. For thruster-based control, the pointing-stability results are analyzed with respect to the per-axis dead band. Results from the scientific instruments onboard the Cassini spacecraft confirm that the pointingstability results in either control mode have ac

Who reads Pointing-Stability Performance of the Cassini Spacecraft?

Author

Emily B. Pilinski; Allan Y. Lee

Publisher

American Institute of Aeronautics and Astronautics; American Institute of Aeronautics and Astronautics (AIAA) (ISSN 0022-4650)

Published

2009

Language

EN

Field

Engineering (Physical Sciences)