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为解决多分量多项式相位信号(mc-PPS)的检测问题,提出乘积性谱图-WVD(PSWVD)变换的多分量PPS信号检测方法.综合谱图和WVD变换的优势,在去除WVD变换交叉项的同时保持了良好的频率聚集性和优良的低信噪比性能.为抑制噪声和交叉项,设置了自适应门限,大幅减少了后续Radon变换的计算量.对三分量线性调频(LFM)、双分量非线性调频(NLFM)和强弱分量PPS信号的仿真结果表明,PSWVD算法具有优良的检测性能.
In order to solve the problem of detection of multi-component polynomial phase signal (mc-PPS), a multi-component PPS signal detection method based on multiplicative spectrum-WVD (PSWVD) transform is proposed.Combining the advantages of spectrum and WVD transform, While maintaining good frequency aggregation and good low signal to noise ratio performance.In order to restrain the noise and cross term, adaptive threshold is set, which greatly reduces the calculation of subsequent Radon transform.For the three component LFM, The simulation results of the dual component nonlinear frequency modulation (NLFM) and the strong and weak component PPS signals show that the PSWVD algorithm has excellent detection performance.