| タイトル | Telecommunications Relay Support of the Mars Phoenix Lander Mission |
| 著者（英） | Gladden, Roy E.; Johnston, Martin D.; Martin-Mur, Tomas J.; Thomas, Reid C.; Signori, Gina; Guinn, Joseph R.; McSmith, Gaylon W.; Erickson, James K.; Jai, Benhan; Schmitz, Peter; Kornfeld, Richard P.; Varghese, Phil; Edwards, Charles D., Jr.; Ilott, Peter A. |
| 著者所属（英） | Jet Propulsion Lab., California Inst. of Tech. |
| 発行日 | 2010-03-06 |
| 言語 | eng |
| 内容記述 | The Phoenix Lander, first of NASA's Mars Scout missions, arrived at the Red Planet on May 25, 2008. From the moment the lander separated from its interplanetary cruise stage shortly before entry, the spacecraft could no longer communicate directly with Earth, and was instead entirely dependent on UHF relay communications via an international network of orbiting Mars spacecraft, including NASA's 2001 Mars Odyssey (ODY) and Mars Reconnaissance Orbiter (MRO) spacecraft, as well as ESA's Mars Express (MEX) spacecraft. All three orbiters captured critical event telemetry and/or tracking data during Phoenix Entry, Descent and Landing. During the Phoenix surface mission, ODY and MRO provided command and telemetry services, far surpassing the original data return requirements. The availability of MEX as a backup relay asset enhanced the robustness of the surface relay plan. In addition to telecommunications services, Doppler tracking observables acquired on the UHF link yielded an accurate position for the Phoenix landing site. |
| NASA分類 | Lunar and Planetary Science and Exploration; Space Communications, Spacecraft Communications, Command and Tracking |
| 権利 | Copyright |
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