Navigation accuracy analyses for two comet rendezvous missions using ion drive

Details Navigation accuracy analyses for two comet rendezvous missions using ion drive Navigation accuracy analyses for two comet rendezvous missions using ion drive

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980aiaa.confv....w&link_type=abstract

American Institute of Aeronautics and Astronautics and American Astronautical Society, Astrodynamics Conference, Danvers, Mass.,

Astronomy and Astrophysics

Astronomy

Comets, Flyby Missions, Ion Propulsion, Mission Planning, Rendezvous Guidance, Space Navigation, Position Errors, Space Rendezvous, Standard Deviation, Systems Engineering, Velocity Errors

Scientific paper

Two cometary missions, making use of the solar electric propulsion system, have recently been considered for launches in the mid to late 1980's. This paper presents navigation accuracy analysis results for the rendezvous portions of these missions, the target bodies being Comet Tempel 2 and Comet Tuttle-Giacobini-Kresak. Orbit determination and guidance accuracies are presented for the baseline navigation strategies, along with the results of a number of sensitivity studies involving parameters such as data frequencies, data accuracies, ion drive thrust vector errors, comet emphemeris uncertainties, time lags associated with data processing and command sequence generation, and certain guidance law parameters. The accuracies obtained are, in some respects, significantly better than the results of previous solar electric propulsion comet rendezvous studies.

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