基于平滑伪Wigner分布的伪码与线性调频复合侦察信号参数估计

熊刚杨小牛赵惠昌

doi:10.3724/SP.J.1146.2007.00205

基于平滑伪Wigner分布的伪码与线性调频复合侦察信号参数估计

doi: 10.3724/SP.J.1146.2007.00205

熊刚杨小牛赵惠昌

基金项目:

国家自然科学基金(60702016)和浙江省博士后基金(2006-bsh-27)资助课题

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出版历程
- 收稿日期: 2007-02-01
- 修回日期: 2007-09-24
- 刊出日期: 2008-09-19

Parameter Estimation of Reconnaissance Signal Combined PN and LFM Based on Smoothed Pseudo Wigner Distribution

Xiong Gang Yang Xiao-niu Zhao Hui-chang

摘要

摘要: 该文研究伪码-线性调频复合体制侦察信号识别的平滑伪Wigner时频分析方法，推导了PRBC-LFM侦察信号的SPWVD时频分布函数，通过对=0+Kt截面上SPWVD分布分析，从中提取了与载频、调频斜率和伪码参数(子脉冲宽度、编码位数、脉冲周期等)有关的特性，设计了参数估计方法。最后在高斯噪声环境下对理论分析的结果进行了仿真，结果表明在相同的信号环境下，该文提出的方法对PRBC-LFM信号的参数估计精度优于基于谱相关以及基于Wigner分布的参数估计性能。
- 伪码 /
- 线性调频 /
- 参数估计 /
- 平滑伪Wigner-Ville分布
Abstract: This paper presents a smoothed pseudo Wigner distribution for PN phase modulation composite reconnaissance signal recognition and deduces SPWVD functions for PRBC-LFM reconnaissance signal. By profile SPWVD distribution analysis，features related to carrier frequency, FM slope and PN parameters such as sub-pulse width, code-length and pulse cycle are extracted. Then a method for the parameter evaluation is presented. Finally, theoretical analysis results are simulated under Gaussian noise conditions. Experiments show the method is superior to these methods based on the spectral correlation method and the Wigner distribution.
- P /
- N /

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参考文献(1)

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