Marine Radiobeacon DGPS/DGLONASS Service and Regional Centers for Differential GLONASS/Alpha/Chayka Services

Pytor Bogdanov,Valery Chistyalcov,Sergey Filatchenkov, Arvid Gevorkyan, and Vladlen Khimulin

Abstract:	In this paper a concept and performances of the Russian Differential GNSS (DGNSS) marine radiobeacon service as well as a description of a Regional Center for monitor/differential services are presented. Use of both GPS and GLONASS has been proposed by the International Maritime Organization as a solution for future navigation needs. So, there is expediency to distribute differential data for both GPS and GLONASS users because of the tenfold improvement in accuracy over conventional positioning in areas where differential data are available. Such a possibility will be realized in the Russian radiobeacon DGNSS service. Thanks to functional redundancy as compared to the widely used DGPS service, the marine public will benefit by having a larger positioning opportunities. In some cases, such as degradation of GPS or GLONASS or specific local operational requirements, the generation of corrections for one GNSS is only possible. Each correction distribution mode's specific features are caused by differences in main operational performances. Along with evaluation of these performances for different modes, the overview of DGNSS service and principles of differential data distributions are presented. Besides, some noise immunity coding implementation problems are described. The purpose of a Regional Center development is supporting GLONASS, very low-frequency (VLF) navigation system ALPHA, low-frequency (LF) navigation system CHAYEA and State System of Common Time and Reference Frequencies by monitoring of navigation /timing fields of these systems over the Russian territory.
Published in:	Proceedings of the 8th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1995) September 12 - 15, 1995 Palm Springs, CA
Pages:	1013 - 1020
Cite this article:	Bogdanov, Pytor, Chistyalcov, Valery, Filatchenkov, Sergey, Gevorkyan, Arvid, Khimulin, Vladlen, "Marine Radiobeacon DGPS/DGLONASS Service and Regional Centers for Differential GLONASS/Alpha/Chayka Services," Proceedings of the 8th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1995), Palm Springs, CA, September 1995, pp. 1013-1020.
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