Performance Comparisons Between GPS and GLONASS Transmission Systems

Abdelahad Benhallam and Raymond Rosso

Abstract:	Although the GPS and GLONASS systems use different techniques, both can provide a very high precise positioning service as well as a global coverage to suitably equipped users. The purpose of this paper is to compare these two systems in a signal processing and transmission context, considering only their respective standard (civil) positioning services. The paper is composed of four sections. The first one permits to have a quick look at the current status of GPS and GLONASS. It also defines the scheduled civil navigation system GNSS. In the second section, GPS and GLONASS are briefly described, and their techniques compared. The third section presents their respective link analyses, and deduces the signal-to- noise ratio. The last section discusses, through a spectral analysis, the resistance of the two systems to channel perturbations including Doppler shift, multipath and intra-system interferences. Results on spectral analysis and resistance to perturbations are obtained from digital simulations.
Published in:	Proceedings of the 1996 National Technical Meeting of The Institute of Navigation January 22 - 24, 1996 Loews Santa Monica Hotel Santa Monica, CA
Pages:	423 - 430
Cite this article:	Benhallam, Abdelahad, Rosso, Raymond, "Performance Comparisons Between GPS and GLONASS Transmission Systems," Proceedings of the 1996 National Technical Meeting of The Institute of Navigation, Santa Monica, CA, January 1996, pp. 423-430.
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