Effect of Partial-Band Interference on Receiver Estimation of C/N0: Measurements

Jeffry T. Ross, Joseph L. Leva and Shawn Yoder

Abstract:	GPS receivers report estimates of each signal’s quality based on measurements of the received signals. Often, the signal quality is reported as a carrier-power-to-noise density ratio, commonly denoted C/N0, where C is the carrier power of the signal and N0 is the power spectral density of the noise. While C/N0 is well-defined in white Gaussian noise, there needs to be a well-founded extension to non-white, Gaussian noise and interference. Also, different approaches for estimating C/N0 need to be assessed for accuracy in non-white interference conditions. This paper describes novel laboratory tests that identify different types of C/N0 estimation approaches used by a receiver. It also introduces a set of tests that measure the effects of interference on tracking accuracy and loss of carrier lock, independent of what the receiver reports for C/N0.
Published in:	Proceedings of the 2001 National Technical Meeting of The Institute of Navigation January 22 - 24, 2001 Westin Long Beach Hotel Long Beach, CA
Pages:	829 - 838
Cite this article:	Ross, Jeffry T., Leva, Joseph L., Yoder, Shawn, "Effect of Partial-Band Interference on Receiver Estimation of C/N0: Measurements," Proceedings of the 2001 National Technical Meeting of The Institute of Navigation, Long Beach, CA, January 2001, pp. 829-838.
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