Low Probability of Intercept Triangular Modulated Frequency Modulated Continuous Wave Signal Characterization Comparison Using the Wigner Ville Distribution and the Choi Williams Distribution
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Abstract
Digital intercept receivers are currently moving away from Fourier-based analysis and towards classical timefrequency analysis techniques for the purpose of analyzing low probability of intercept radar signals This paper presents the novel approach of characterizing low probability of intercept triangular modulated frequency modulated continuous wave radar signals through utilization and direct comparison of the Wigner Ville Distribution versus the Choi Williams Distribution The following metrics were used for evaluation percent error of carrier frequency modulation bandwidth modulation period chirp rate and time-frequency localization x and y direction Also used were percent detection lowest signal-tonoise ratio for signal detection and plot processing time Experimental results demonstrate that overall the Wigner Ville Distribution produced more accurate characterization metrics than the Choi Williams Distribution An improvement in performance may well translate into an increase in personnel safety
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Published
2019-03-15
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