短猝发通信信号的高灵敏度干涉仪测向方法研究及其实现  

Research and Implementation of Direction Finding Method with High Sensitivity Interferometer for Low Intercept Communication Signal

作　　者：赵张宏[1] 叶磊 柯晓东 ZHAO Zhang-hong;YE Lei;KE Xiao-dong(No.36 Research Institute of CETC,Jiaxing Zhejiang 314033,China)

机构地区：[1]中国电子科技集团公司第三十六研究所,浙江嘉兴314033

出　　处：《通信对抗》2023年第4期8-11,共4页Communication Countermeasures

摘　　要：为了解决短猝发通信信号干涉仪测向灵敏度问题,设计了宽带数字波束形成和干涉仪工程实现结构。通过宽带数字波束形成,在频域对每个频点进行相位补偿,提高期望方向信号的增益,采用频域鉴相方法提取相位差,根据最小二乘法匹配未知来波方向和已知来波方向相位差,确定辐射目标方位角。仿真结果表明,该系统具有较高的测向灵敏度和精度,同时硬件资源消耗少,实时性高,易于工程化应用。This paper solves the problem of low intercept probability signal direction finding sensitivity of interferometer.By means of wideband digital beam forming,the phase compensation of each frequency point in the frequency domain improves the gain of the desired direction signal.The phase difference is extracted by the method of phase acquisition in frequency domain.The phase difference between unknown and known incoming wave direction is matched by the least square method to determine the azimuth of the radiation target.The implementation structure of wideband digital beam forming and interferometer engineering is designed.The simulation results show the system has high sensitivity and accuracy,low hardware resource consumption,high real-time performance and easy engineering application.

关 键 词：短猝发信号 宽带波束合成 频域鉴相 

分 类 号：TN971[电子电信—信号与信息处理]