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Precise Onboard Orbit Determination for LEO Satellites with Real-Time Orbit and Clock Corrections

Hauschild, Andre und Tegedor, Javier und Montenbruck, Oliver und Visser, Hans und Markgraf, Markus (2016) Precise Onboard Orbit Determination for LEO Satellites with Real-Time Orbit and Clock Corrections. In: Proceedings of the 29th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS 2016), Seiten 3715-3723. ION GNSS+ 2016, 2016-09-12 - 2016-09-16, Portland, Oregon, USA. doi: 10.33012/2016.14717.

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Offizielle URL: https://www.ion.org/publications/abstract.cfm?articleID=14717

Kurzfassung

Precise Point Positing (PPP) with real-time orbit and clock correction streams has become an established technique over the last decade for land, air and sea applications. The use of real-time corrections for precise positioning has not extended into orbit yet, although a number of low-Earth orbit (LEO) satellite missions have a demand for precise orbit determination (POD). Future satellites with altimeter and radio-occultation payloads may require real-time POD to enable onboard processing of science data for forecasting or nowcasting of meteorology data, open-loop instrument operations of radar payloads, or quick-look onboard science data generation. Also, precise real-time orbit information may be utilized for constellation maintenance of satellite formations. A POD accuracy of a few decimeters or better with precise GPS real-time corrections has repeatedly been demonstrated in the past. For these studies it was assumed that the corrections are continuously available. This is, however, not guaranteed to be the case in a realistic on-orbit scenario, in which the corrections are disseminated via a network of geostationary (GEO) satellites to the LEO satellite. The data link to the GEO constellation may not be available over the polar regions, thus outdated corrections must be used until up-to-date data is received again. These correction data gaps will have an adverse effect on the POD accuracy, especially since the satellite visibility is typically also reduced as well over the North and South pole. To assess the effect of outdated correction data on onboard POD, a Kalman-filter-based navigation algorithm has been used to process real-world GPS observations of a representative LEO satellite mission together with corrections based on real-time orbit and clock products from Fugro. Data gaps of different length have been simulated, during which the corrections must be extrapolated. The magnitude of orbit and clock extrapolation errors is assessed. Clock extrapolation errors are evaluated depending on the satellite block type and clock model. Real-time on-board POD results for the different scenarios are compared to a precise reference solution.

elib-URL des Eintrags:https://elib.dlr.de/111586/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Precise Onboard Orbit Determination for LEO Satellites with Real-Time Orbit and Clock Corrections
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Hauschild, Andreandre.hauschild (at) dlr.dehttps://orcid.org/0000-0002-0172-3492NICHT SPEZIFIZIERT
Tegedor, Javierj.tegedor (at) fugro.comNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Montenbruck, OliverOliver.Montenbruck (at) dlr.dehttps://orcid.org/0000-0003-4783-745XNICHT SPEZIFIZIERT
Visser, HansHans.Visser (at) fugro.comNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Markgraf, Markusmarkus.markgraf (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:2016
Erschienen in:Proceedings of the 29th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS 2016)
Referierte Publikation:Nein
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
DOI:10.33012/2016.14717
Seitenbereich:Seiten 3715-3723
Status:veröffentlicht
Stichwörter:Onboard POD, GNSS, Real-Time Corrections
Veranstaltungstitel:ION GNSS+ 2016
Veranstaltungsort:Portland, Oregon, USA
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:12 September 2016
Veranstaltungsende:16 September 2016
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Technik für Raumfahrtsysteme
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R SY - Technik für Raumfahrtsysteme
DLR - Teilgebiet (Projekt, Vorhaben):R - Vorhaben Infrastruktur und Unterstützung für Raumflugbetrieb (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Raumflugbetrieb und Astronautentraining > Raumflugtechnologie
Hinterlegt von: Hauschild, André
Hinterlegt am:24 Apr 2017 11:04
Letzte Änderung:11 Jun 2024 13:41

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