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Evaluation of Landsat-4 orbit determination accuracy using batch least-squares and sequential methodsThe Goddard Space Flight Center (GSFC) Flight Dynamics Division (FDD) commissioned Applied Technology Associates, Incorporated, to develop the Real-Time Orbit Determination/Enhanced (RTOD/E) system on a Disk Operating System (DOS)-based personal computer (PC) as a prototype system for sequential orbit determination of spacecraft. This paper presents the results of a study to compare the orbit determination accuracy for a Tracking and Data Relay Satellite (TDRS) System (TDRSS) user spacecraft, Landsat-4, obtained using RTOD/E, operating on a PC, with the accuracy of an established batch least-squares system, the Goddard Trajectory Determination System (GTDS), operating on a mainframe computer. The results of Landsat-4 orbit determination will provide useful experience for the Earth Observing System (EOS) series of satellites. The Landsat-4 ephemerides were estimated for the May 18-24, 1992, timeframe, during which intensive TDRSS tracking data for Landsat-4 were available. During this period, there were two separate orbit-adjust maneuvers on one of the TDRSS spacecraft (TDRS-East) and one small orbit-adjust maneuver for Landsat-4. Independent assessments were made of the consistencies (overlap comparisons for the batch case and covariances and the first measurement residuals for the sequential case) of solutions produced by the batch and sequential methods. The forward-filtered RTOD/E orbit solutions were compared with the definitive GTDS orbit solutions for Landsat-4; the solution differences were generally less than 30 meters after the filter had reached steady state.
Document ID
19950049804
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Oza, D. H.
(Computer Sciences Corp. Lanham-Seabrook, MD, US, United States)
Jones, T. L.
(Computer Sciences Corp. Lanham-Seabrook, MD, US, United States)
Feiertag, R.
(Computer Sciences Corp. Lanham-Seabrook, MD, US, United States)
Samii, M. V.
(Computer Sciences Corp. Lanham-Seabrook, MD, US, United States)
Doll, C. E.
(NASA Goddard Space Flight Center Greenbelt, MD, US, United States)
Mistretta, G. D.
(NASA Goddard Space Flight Center Greenbelt, MD, US, United States)
Hart, R. C.
(NASA Goddard Space Flight Center Greenbelt, MD, US, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Publication Information
Publication: In: Spaceflight mechanics, 1993; AAS(AIAA Spaceflight Mechanics Meeting, 3rd, Pasadena, CA, Feb. 22-24, 1993, Parts 1 & 2 . A95-81344
Publisher: American Astronautical Society (Advances in the Astronautical Sciences, Vol. 82, Pts. 1 & 2)
ISSN: 0065-3438
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking
Accession Number
95A81403
Funding Number(s)
CONTRACT_GRANT: NAS5-31500
Distribution Limits
Public
Copyright
Other

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