Effective Signal to Noise Ratio Performance Comparison Of Some GPS Modernization Signals

J. K. Holmes, S. Raghavan, P. Dafesh, S. Lazar

Abstract:	Studies conducted for the GPS Joint Program Office on the comparative performance of numerous signal modulation schemes for GPS Modernization have been going on for the last two and a half years. The results presented here are based on the analysis conducted by The Aerospace Corporation for the modulation and acquisition-signals development (MAD) subteam. This analysis considers the effective correlated signal-to-noise ratio out of the matched filter data detector, under the assumptions of ideal code tracking and ideal carrier tracking. The performance of the new military signal for GPS Modernization is modeled for three postulated jammers (in addition to other interference sources such as the CDMA interference effects from C/A, P(Y) and the M-codes from other satellites and thermal noise.) The three types of jammers postulated include a narrow band jammer located at the spectral peak of the M-code spectral density, a matched spectrum jammer which has the same power spectral density as M-code signal under investigation, and lastly a P(Y) code jammer which has a matched spectral density equal to that of the existing P(Y) codes.
Published in:	Proceedings of the 12th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1999) September 14 - 17, 1999 Nashville, TN
Pages:	1755 - 1762
Cite this article:	Holmes, J. K., Raghavan, S., Dafesh, P., Lazar, S., "Effective Signal to Noise Ratio Performance Comparison Of Some GPS Modernization Signals," Proceedings of the 12th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1999), Nashville, TN, September 1999, pp. 1755-1762.
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