| 一种综合时频分布在mc-PPS检测中的应用 |
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| 引用本文： | 李利,司锡才,彭巧乐. 一种综合时频分布在mc-PPS检测中的应用[J]. 大连海事大学学报(自然科学版), 2009, 35(1) |
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| 作者姓名： | 李利 司锡才 彭巧乐 |
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| 作者单位： | 李利,LI Li(哈尔滨工程大学,信息与通信工程学院,哈尔滨,150001;91329部队司令部自动化站,山东,威海,264200);司锡才,彭巧乐,SI Xi-cai,PENG Qiao-le(哈尔滨工程大学,信息与通信工程学院,哈尔滨,150001) |
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| 摘 要： | 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.
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| 关 键 词： | 多项式相位信号 谱图 维格纳变换 乘积性 Radon变换 |
Application of a synthesized time-frequency distribution to mc-PPS's detection |
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| LI Li,,SI Xi-cai,PENG Qiao-le. Application of a synthesized time-frequency distribution to mc-PPS's detection[J]. Journal of Dalian Maritime University, 2009, 35(1) |
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| Authors: | LI Li SI Xi-cai PENG Qiao-le |
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| Affiliation: | LI Li1,2,SI Xi-cai1,PENG Qiao-le1(1.School of Information , Communication Engineering,Harbin Engineering University,Harbin 150001,China,2.Automatization Department of 91329 Troops Comm,,Weihai 264200,China) |
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| Abstract: | A product spectrogram-WVD(PSWVD) transform method for detecting multicomponent PPS(mc-PPS) was developed.The PSWVD algorithm combines the merits of spectrogram with WVD transform,which holds good frequency aggregation and antinoise performance while removing cross-terms of WVD.Meanwhile an adaptive threshold was set up to suppress noise and cross-terms,which reduces the computation mostly for the following Radon transform.Simulations on 3 component linear frequency modulation(LFM) signals,2 component non-li... |
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| Keywords: | polynomial phase signal(PPS) spectrogram WVD transform product Radon transform |
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