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Navigational use of Cassini ΔV telemetry
Roth, Duane C.; Antreasian, Peter G.; Ardalan, Shadan M.; Criddle, Kevin E.; Goodson, Troy; Ionasescu, Rodica; Jones, Jeremy B.; Parcher, Daniel W.; Pelletier, Frederic J.; Thompson, Paul F.; Vaughan, Andrew T.
Publisher:Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2008
Citation:AIAA/AAS Astrodynamics Specialist Conference, Honolulu, Hawaii, August 18-21, 2008
Abstract:
Telemetry data are used to improve navigation of the Saturn orbiting Cassini spacecraft. Thrust induced ΔV’s are computed on-board the spacecraft, recorded in telemetry, and downlinked to Earth. This paper discusses how and why the Cassini Navigation team utilizes spacecraft ΔV telemetry. Operational changes making this information attractive to the Navigation Team will be briefly discussed, as will spacecraft hardware and software algorithms responsible for the on-board computation. An analysis of past ΔV telemetry, providing calibrations and accuracies that can be applied to the estimation of future ΔV activity, is described.
