TUTCRIS - Tampereen teknillinen yliopisto

TUTCRIS

Efficient Satellite Orbit Approximation

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Yksityiskohdat

AlkuperäiskieliEnglanti
OtsikkoION GPS 2000, 13th International Technical Meeting of the Institute of Navigation Satellite Division, Salt Lake City, USA, Sept 19-22, 2000
Sivut1930-1937
TilaJulkaistu - 2000
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa

Tiivistelmä

In order to speed up satellite position and velocity computation, the ephemeris orbit model is approximated by simple curves. Piecewise polynomial interpolation is shown to be appropriate for the purpose, and especially splines and Hermite polynomials of different degrees and sampling intervals are compared. Cubic Hermite interpolation, along with its other beneficial properties, attains more than tenfold efficiency compared to ephemeris evaluation.

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