GLONASS Dual Frequency Ionosphere Sounder

James Danaher, Anushia Balendra, Mike Danaher, Eric Erpelding, Ron Gerlach, and Jacques Beser

Abstract:	The Russian GLONASS Navigation satellites each transmit a 5.11 MHz PRN (pseudo random number) code at both Ll and L2 frequencies. The 3s Navigation R-101 GLONASS P-code receiver monitors GLONASS Ll and L2 code and carrier observables. Measurements with the R-101 show that neither Anti-spoofing (AS) nor Selective Availability (SA) corruption are applied to the GLONASS P-code signals. Dual frequency GLONASS carrier phase observations with the R-101 provide a highly precise measure of ionosphere electron density change along the line-of-sight from satellite to receiver. Dual frequency GLONASS P-code observations allow an estimation of the absolute line-of-sight electron density. The R-101 has also been used for detailed study of the GLONASS P-code data bits transmitted on the Ll band. Initial GLONASS P-code navigation tests have been conducted. Real-time navigation with GLONASS dual-frequency ionosphere corrections is currently under development.
Published in:	Proceedings of the 6th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1993) September 22 - 24, 1993 Salt Palace Convention Center Salt Lake City, UT
Pages:	1363 - 1372
Cite this article:	Danaher, James, Balendra, Anushia, Danaher, Mike, Erpelding, Eric, Gerlach, Ron, Beser, Jacques, "GLONASS Dual Frequency Ionosphere Sounder," Proceedings of the 6th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1993), Salt Lake City, UT, September 1993, pp. 1363-1372.
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