Precise ERS-2 orbit determination using SLR, PRARE, and RA observations |
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| Authors: | P. H. Andersen K. Aksnes H. Skonnord |
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| Affiliation: | (1) Forsvarets forskningsinstitutt, P.O. Box 25, N-2007 Kjeller, Norway Tel: +47 63 807407; fax: +47 63 807212; e-mail: per-helge.andersen@ffi.no, NO;(2) Institute of Theoretical Astrophysics, P.O. Box 1029, Blindern N-0315, Oslo, Norway, NO |
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| Abstract: | The second European Remote Sensing satellite ERS-2, launched in 1995, is supported by satellite laser ranging (SLR), the German precise range and range-rate equipment (PRARE) microwave tracking system, and radar altimetry (RA). SLR, PRARE and crossover RA observations (XO/RA) from May, June, and July 1996 have been analyzed using the GEOSAT software developed at Forsvarets forskningsinstitutt (FFI, The Norwegian defence research establishment). Orbits computed with the JGM3 gravity model and the more recent EGM96 gravity model have been compared with orbits from other analysis centers. Based on these comparisons in addition to the post-fit observation residuals, and results from internal orbital overlaps, we conclude that the radial component of the ERS-2 orbit can be determined with a precision of 6 cm. Received: 30 June 1997 / Accepted: 4 February 1998 |
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| Keywords: | . ERS-2 SLR PRARE Altimetry Orbit determination |
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