摘要
针对无源系统对噪声调频干扰源进行测向的问题,在研究宽带信号的数字鉴相算法的基础上,提出了一种采用多通道信号、基于广义相位谱(GPS)的测向算法。先把阵元接收到的信号变换到频域,然后运用广义相位谱对互谱相位差加权处理,进而估计出宽带噪声调频信号的波达角。仿真实验的结果表明,该测向方法对不同带宽的干扰信号都可保证较高的测向精度。
To find the direction of noise-frequency modulation jammer using passive systems, the algorithm for phase discriminating of wideband signal is studied. A new method using multi-channel data based on generalized phase spectrum is presented. Firstly, the signals received by the array are transformed into frequency domain. Then DOA estimation of wideband noise FM signals is got through the phase of cross spectrum via the GPS weighting. Experimental results illustrate that the proposed method achieves well performance for jamming signals with different bandwidth.
出处
《航天电子对抗》
2014年第1期36-39,共4页
Aerospace Electronic Warfare
关键词
干扰源
广义相位谱
测向
jammer
generalized phase spectrum （GPS） method direction finding
