| タイトル | Ulysses navigation at Jupiter encounter |
| 著者（英） | Mcelrath, Timothy P.; Tucker, Bernadette; Criddle, Kevin E.; Higa, Earl S.; Menon, Prem R. |
| 著者所属（英） | Jet Propulsion Lab., California Inst. of Tech. |
| 発行日 | 1992-08-01 |
| 言語 | eng |
| 内容記述 | The Ulysses spacecraft encountered Jupiter in February 1992, to provide a gravity assist for its prime mission over the poles of the sun. Orbit determination performed before the nominal final targeting maneuver resulted in the maneuver being cancelled. A surprisingly large Jupiter ephemeris error resulted in a slightly different encounter than planned, but one still meeting requirements. In an accompanying experiment, an alternative method of processing two-way range data was demonstrated, showing that orbit solutions obtained from only range and Doppler data can approach the accuracy of solutions based on Very Long Baseline Interferometry, range and Doppler data. Post-encounter reconstruction of the spacecraft orbit shows that the Jupiter-relative position of the spacecraft is known to within 3 kilometers, and that the Jupiter ephemeris at the time of encounter has an uncertainty of 11, 12, and .8 kilometers in the transverse, normal, and radial directions relative to Jupiter's orbit plane. |
| NASA分類 | SPACE COMMUNICATIONS, SPACECRAFT COMMUNICATIONS, COMMAND AND TRACKING |
| レポートNO | 93A13294
AIAA PAPER 92-4524 |
| 権利 | Copyright |
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