Application of the GPS system for preliminary satellite orbit determination

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Chiaradia, A. P M
Da Silva Fernandes, S.
Vilhena de Moraes, R. [UNESP]
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In this paper, we discuss a method of preliminary orbit determination for an artificial satellite based on the navigation message of the GPS constellation. Orbital elements are considered as state variables and a simple dynamic model, based on the classic two-body problem, is used. The observations are formed by range and range and range-rate with respect to four visible GPS. A discrete Kalman filter with simulated data is used as filtering technique. The data are obtained through numerical propagation (Cowell's method), which considers special perturbations for the GPS satellite constellation and a user satellite. © 1997 COSPAR. Published by Elsevier Science Ltd.
GPS, orbit determination, satellite system
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Advances in Space Research, v. 19, n. 11, p. 1671-1675, 1997.