雷达辐射源极化特征参数和到达角快速测量方法  

The Rapid Measurement Method of Polarization Characteristic Parameters and Arrival Angle of Radar Radiation Source

作　　者：苑梦斯 张文旭 孙富礼 Yuan Mengsi;Zhang Wenxu;Sun Fuli(Harbin Engineering University,Harbin 150001,China;Shanghai Radio Equipment Research Institute,Shanghai 201109,China)

机构地区：[1]哈尔滨工程大学,黑龙江哈尔滨150001 [2]上海无线电设备研究所,上海201109

出　　处：《航空科学技术》2024年第11期27-32,共6页Aeronautical Science & Technology

基　　金：航空科学基金(202200200P6002)。

摘　　要：辐射信号的极化信息可以在一定程度上反应雷达的属性和类别,对雷达信号分选与识别具有重要意义。针对当前电磁波极化参数测量方法存在数据处理量大、计算耗时长的不足,本文提出了一种极化特征参数与到达角的快速测量方法。首先构建了辐射源信号在正交极化天线下的响应模型,进而结合干涉仪测角原理,通过对各天线通道数据的组合处理,实现了极化特征参数和到达角的快速测量。试验结果表明,该方法的极化辅助角测量误差在1.5°以内,极化相位差误差小于0.2°,且相较于极化多信号分类算法,其运算时间缩短了1.4s。试验结果充分验证了本文所提理论模型和估计方法的有效性和时效性,为电磁波极化特性的快速测量提供了新的有效途径。The polarization information of radiation signals can reflect the attributes and categories of radar to a certain extent,which is of great significance for radar signal sorting and recognition.Aiming at the shortcomings of the method of measuring electromagnetic polarization parameters,such as large amount of data processing and long calculation time,a fast method of measuring polarization characteristic parameters and arrival angle is proposed in this paper.Firstly,the response model of radiation source signal under orthogonal polarized antenna is constructed,and then the polarization characteristic parameters and arrival angle are measured quickly by combining the principle of interferometer angle measurement with the channel data of each antenna.The experimental results show that the polarization magnitude measurement error of this method is less than 1.5°,the polarization phase difference error is less than 0.2°,and the operation time is shortened by 1.4s compared with the polarization multi-signal classification algorithm.The experimental results fully verify the validity and timeliness of the theoretical model and estimation method proposed in this paper,and provide a new effective way for rapid measurement of electromagnetic polarization characteristics.

关 键 词：极化特征 参数测量 到达角 干涉仪 雷达侦察 

分 类 号：TN971.3[电子电信—信号与信息处理]