Kahle, Ralph und Schlepp, Benjamin und Aida, Saika und Kirschner, Michael und Wermuth, Martin (2012) Flight Dynamics Operations of the TanDEM-X Formation. SpaceOps 2012, 2012-06-11 - 2012-06-15, Stockholm, Schweden. doi: 10.2514/6.2012-1275094.
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Kurzfassung
Since end of 2010 the German TerraSAR-X and TanDEM-X satellites are routinely operated as the first configurable single-pass Synthetic Aperture Radar interferometer in space. The two 1340 kg satellites fly in a 514 km sun-synchronous orbit. In order to collect sufficient measurements for the generation of a global digital elevation model and to demonstrate new interferometric SAR techniques and applications, more than three years of formation flying are foreseen with flexible baselines ranging from 150 m to few kilometers. As a prerequisite for the close formation flight an extensive flight dynamics system was established at DLR/GSOC, which comprises of GPS-based absolute and relative navigation and impulsive orbit and formation control. Daily formation maintenance maneuvers are performed by TanDEM-X to counterbalance natural and artificial disturbances. The paper elaborates on the routine flight dynamics operations and its interactions with mission planning and ground-station network. The navigation and formation control concepts and the achieved control accuracy are briefly outlined. Furthermore, the paper addresses non-routine operations experienced during formation acquisition, frequent formation reconfiguration, formation maintenance problems and space debris collision avoidance, which is even more challenging than for single-satellite operations. In particular two close approaches of debris are presented, which were experienced in March 2011 and April 2012. Finally, a formation break-up procedure is discussed which could be executed in case of severe onboard failures.
elib-URL des Eintrags: | https://elib.dlr.de/80909/ | ||||||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag, Paper) | ||||||||||||||||||||||||
Titel: | Flight Dynamics Operations of the TanDEM-X Formation | ||||||||||||||||||||||||
Autoren: |
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Datum: | 10 Juni 2012 | ||||||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||
DOI: | 10.2514/6.2012-1275094 | ||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||
Stichwörter: | TerraSAR-X, TanDEM-X, formation flying, flight dynamics operations, debris collision avoidance | ||||||||||||||||||||||||
Veranstaltungstitel: | SpaceOps 2012 | ||||||||||||||||||||||||
Veranstaltungsort: | Stockholm, Schweden | ||||||||||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||||||
Veranstaltungsbeginn: | 11 Juni 2012 | ||||||||||||||||||||||||
Veranstaltungsende: | 15 Juni 2012 | ||||||||||||||||||||||||
Veranstalter : | SSC und DLR | ||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||||||||||||||
HGF - Programmthema: | Erdbeobachtung | ||||||||||||||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||||||||||
DLR - Forschungsgebiet: | R EO - Erdbeobachtung | ||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Projekt TanDEM-X (alt) | ||||||||||||||||||||||||
Standort: | Oberpfaffenhofen | ||||||||||||||||||||||||
Institute & Einrichtungen: | Raumflugbetrieb und Astronautentraining > Raumflugtechnologie | ||||||||||||||||||||||||
Hinterlegt von: | Kahle, Dr.-Ing. Ralph | ||||||||||||||||||||||||
Hinterlegt am: | 24 Jan 2013 17:33 | ||||||||||||||||||||||||
Letzte Änderung: | 24 Apr 2024 19:47 |
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