Double-characters detection of nonlinear frequency modulated signals based on FRFT |
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Authors: | XU ShuWen SHUI PengLang YANG XiaoChao |
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Affiliation: | National Laboratory of Radar Signal Processing, Xidian University, Xi'an 710071, China |
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Abstract: | In many practical applications,signals to be detected are unknown nonlinear frequency modulated (FM)and are corrupted by strong noise.The phase histories of the nonlinear FM signals are assumed to be unknown smooth functions of time,which are usually poorly modeled or cannot be modeled at all by a small number of parameters.Because of the lack of phase model,a nonparametric detection method is proposed based on successive fractional Fourier transform and double-characters detection.The detection process goe... |
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Keywords: | fractional Fourier transform double-characters detector nonparametric detection multiple median filtering |
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