Abstract

Electromagnetic interference can be highly disruptive to global navigation satellite system (GNSS) receivers. Interference can be intentional but can also occur from electronics modules placed within the same system, where these modules may create sufficient unintended radiated emissions to disrupt GNSS operation. In this paper, GNSS receiver performance is evaluated in the presence of multi-tone interference. An expression for the GNSS correlator output in the presence of continuous wave interference (CWI) is derived and is extended to predict the carrier to noise density ratio, C/N0, of the receiver in the presence of multi-tone interference. C/N0 is widely used for characterizing interference with GNSS receivers. Analytical estimates of C/N0 are compared to results from measurements performed on a commercially available GNSS unit. The value of C/N0 was predicted within a standard deviation of 0.97 dB when the noise type and level was varied, demonstrating the accuracy of the derived equations. These equations will be used in the future to develop more intelligent guidelines for evaluating the impact of interference from electronic modules placed in the same system as a GNSS receiver.

Department(s)

Electrical and Computer Engineering

Keywords and Phrases

C/N measurement 0; GNSS interference; GPS RFI Evaluation

International Standard Serial Number (ISSN)

2158-1118; 1077-4076

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.

Publication Date

01 Jan 2024

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