Differential GPS Measurements Using the PRODAT Satellite Communication System

Jose M. Legido, Manuel MarthNeira

Abstract:	This paper presents a re8l time differential GPS sys- tem bssed on stand-crlone GPS C/A code snd carrier phase observables. The link between the remote and base stations is 8chieved by means of the PRODAT satellite-bared communication system, developed by the European Space Agency (ESA) for mobile com- munications. The differential algorithm is free of dynamic snd bi8s errors, enabling the b8se station to compute the real time position of the mobile station with an accuracy of 3 m (2 sigma), and its velocity within a few cm/s. This system proves the performance of diiFerenti8l G- PS when corrections sre transmitted through a geo- statiomuy (GEO) w&Bite link. This allows the base station to monitor remote mobile users over a much larger range then with terrestrial links. The need for a loeel link, which may be not apBilLLble or too com- plicated to be implemented is thus avoided.
Published in:	Proceedings of the 5th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1992) September 16 - 18, 1992 Albuquerque, NM
Pages:	599 - 605
Cite this article:	Legido, Jose M., MarthNeira, Manuel, "Differential GPS Measurements Using the PRODAT Satellite Communication System," Proceedings of the 5th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1992), Albuquerque, NM, September 1992, pp. 599-605.
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