Orbit determination of Sakigake and Suisei encountering Halley's Comet

Details Orbit determination of Sakigake and Suisei encountering Halley's Comet Orbit determination of Sakigake and Suisei encountering Halley's Comet

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.255..167n&link_type=abstract

In ESA Proceedings of the Second International Symposium on Spacecraft Flight Dynamics p 167-172 (SEE N87-25354 19-18)

Computer Science

Computer Systems Programs, Flyby Missions, Halley'S Comet, Japanese Spacecraft, Orbital Position Estimation, Satellite Tracking, Equations Of Motion, Numerical Stability, Relativity, Trajectory Optimization

Scientific paper

The orbit determination program used to track the Japanese Halley's comet flyby satellites is described. A square root filter form is adopted in addition to the normal-equation form as the estimation formula, since filtering itself has numerical difficulty because of poor observability due to the long distance between the probe and the tracking station. The effect of general relativity is taken into account in the equation of motion as well as in the observation model. Tracking results are shown.

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