ReportDOI
Effect of Partial-Band Interference on Receiver Estimation of C/N0: Theory
John W. Betz
- pp 817-828
TLDR
This paper considers two fundamentally different ways that receivers measure and report the effect of interference on signal quality, demonstrating that in non-white noise the measures are not the same.Abstract:
: Testing the response of C/A code receivers to partial-band interference (continuous Gaussian interference whose power is concentrated in part of the front-end bandwidth) has included examining how receivers measure and report the effect of such interference. This paper considers two fundamentally different ways that receivers measure and report the effect of interference on signal quality, demonstrating that in non-white noise the measures are not the same. While the effective C/N0 reliably measures the effect of interference on a receiver, the precorrelation C/N0 is not reliable. Specifically, precorrelation estimation of N0 does not properly account for the spectrum of the interference. Depending on the spectrum of the interference, precorrelation estimates may be accurate, or may over-estimate the degradation caused by interference, or may under-estimate the degradation caused by interference. Theoretical and numerical results are provided and compared to some measured data.read more
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References
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Effect of Narrowband Interference on GPS Code Tracking Accuracy
TL;DR: In this article, the effect of Gaussian interference on GPS code tracking accuracy has been evaluated using a real-time hardware testbed, and the results showed that, for C/A code receivers, narrowband interference at frequencies away from band center can degrade code tracking performance more than interference having the same power at band center, even though the receiver's measured signal-to-noise ratio degrades more when narrowband ��interference frequency is located at band centre.
Effect of Partial-Band Interference on Receiver Estimation of C/N0: Measurements
TL;DR: In this paper, the effects of interference on tracking accuracy and loss of carrier lock were evaluated for non-white, Gaussian noise and interference, independent of what the receiver reports for C/N0.