摘要
直达波作为无源雷达探测系统中的参考信号,在传输过程中受到多径杂波和噪声的干扰,从而对系统的探测性能产生影响。利用参考通道接收到的混合信号中直达波的能量最大这一现实,提出用主分量分析的方法对混合信号进行降维处理,通过保留主分量,舍弃次分量,达到了提取直达波的目的。仿真结果表明:该方法可以有效的从噪声干扰和多径干扰中提取直达波,提纯效果较好,且操作简便易行。
and noise system. By component compo results The direct-path- passive radar d adopting analysis wave as the reference signal etection system, and further is affected by influence the the reality of the direct-path-wave has the highest e multi-path interference performance of the d nergy. A method of p is proposed, which can reduce dimension of the mixed signals, nents,abandon the minor components, achieve the extraction of direct-path-wave signals etection rincipal retain the principal aim. The simulation show that the method can extract the direct-path-wave efficiently from the multi-path interference signals and noise, has the better extraction effect, and the method is simple
出处
《舰船科学技术》
北大核心
2013年第3期74-77,共4页
Ship Science and Technology
基金
国家自然科学基金资助项目(61077037)
关键词
无源雷达
直达波
主分量分析
passive radar
direct-path-wave
principal component analysis
