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A Joint Method Based on Time-Frequency Distribution to Detect Time-Varying Interferences for GNSS Receivers with a Single Antenna

School of Electronic and Information Engineering, Beihang University, Beijing 100191, China
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Sensors 2019, 19(8), 1946; https://doi.org/10.3390/s19081946
Received: 14 March 2019 / Revised: 10 April 2019 / Accepted: 22 April 2019 / Published: 25 April 2019
(This article belongs to the Section Remote Sensors, Control, and Telemetry)
In this paper, a joint method combining Hough transform and reassigned smoothed pseudo Wigner-Ville distribution (RSPWVD) is presented to detect time-varying interferences with crossed frequency for a Global Navigation Satellite System (GNSS) receiver with a single antenna. The proposed method can prevent the cross-term interference and detect the time-varying interferences with crossed frequency which cannot be achieved by the classical time-frequency (TF) analysis with the peak detection method. The actual performance of the developed method has been evaluated by experiments with conditions where the real BeiDou system (BDS) B1I signals are corrupted by the simulated chirp interferences. The results of experiments show that the introduced method is effectively able to detect chirp interferences with crossed frequency and provide the same root mean square errors (RMSE) of the parameter estimation for chirp one and the improved initial frequency estimation for chirp two compared with the Hough transform of Wigner-Ville distribution (WVD) when the jamming to noise ratio (JNR) equals or surpasses 4 dB. View Full-Text
Keywords: GNSS; time-varying interference; single antenna; RSPWVD; Hough transform GNSS; time-varying interference; single antenna; RSPWVD; Hough transform
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Lv, Q.; Qin, H. A Joint Method Based on Time-Frequency Distribution to Detect Time-Varying Interferences for GNSS Receivers with a Single Antenna. Sensors 2019, 19, 1946.

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