A Joint Time-Frequency Analytical Method for Electromagnetic Interference in Railway GNSS System

A time-frequency analytical method using a combined adaptive optimal-kernel with compressed sensing is proposed in this paper for analyzing the electromagnetic interference in railway GNSS system. The proposed method is applied to analyzing the liner-frequency-modulated signal and pantograph-catenary arc interference in GNSS system, the performance of the proposed representation is further verified by comparing with short-time Fourier transform and Wigner-Ville distribution.