Study of the Resistance of GNSS Satellite Navigation Receiver to the Operation of a Narrowband Interfering Signal

The article presents mathematical foundations and a description of the algorithm assessing the performance of GPS receivers in the circumstances of simultaneous reception of interfering signals. The main focus was on the analysis of the variant in which the interfering signal is a narrowband signal. Simulation tests were carried out using the Matlab simulation and GlabGNSS simulation package for different values of the bandwidth of the interfering signal indicated in the paper, as WB (5 Hz) and NB (2 Hz). The discussed method ensures effective implementation of disturbance processes both in the exact position accuracy determined by the disturbed receiver, as well as disrupts the processes of tracking and searching for SIS signals by the GPS satellite receiver. Based on the analysis, created mathematical models and conducted simulation research in the field of the subject of the study, the final part of the article presents practical conclusions resulting from the proposed solution.