| 双极化单脉冲雷达两点源干扰目标角度测量方法 |
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| 引用本文： | 王建路,戴幻尧,李金梁,曾勇虎.双极化单脉冲雷达两点源干扰目标角度测量方法[J].电波科学学报,2019,34(6):732-740. |
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| 作者姓名： | 王建路 戴幻尧 李金梁 曾勇虎 |
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| 作者单位： | 电子信息系统复杂电磁环境效应国家重点实验室,洛阳471003;中国洛阳电子装备试验中心,洛阳471003;中国洛阳电子装备试验中心,洛阳471003;电子信息系统复杂电磁环境效应国家重点实验室,洛阳471003 |
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| 基金项目： | 国家自然科学基金61801480国家自然科学基金61701502 |
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| 摘 要： | 干扰和目标回波同时位于雷达主瓣时，能够改变天线口面的相位波前，严重干扰雷达角度测量.为解决这个难题，提出了基于极化信息的单脉冲处理方法，将雷达改进为双极化接收，并增加相应的和差网络，得到六路带极化信息的和差信号，带入本文设计的解析公式进行解算，可以避免角度估计中因为干扰产生的耦合误差，确保准确的雷达测角及跟踪.仿真结果证明，该方法能够在干扰条件下得到正确的角度估计，使对抗拖曳式诱饵干扰的工程实现更加简洁高效，对于提升雷达的抗干扰能力具有重要意义.
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| 关 键 词： | 双极化 单脉冲雷达 预滤波 角度估计 耦合误差 |
| 收稿时间： | 2019-04-01 |
Target angle estimation method based on dual polarization monopulse radar under two source jamming |
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| Affiliation: | 1.State Key Laboratory of Complex Electromagnetic Environment Effect on Electronics and Information System, Luoyang 471003, China2.Luoyang Electronic Equipment Test Center, Luoyang 471003, China |
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| Abstract: | When jammer and target are located in the main beam of radar, phase wavefront near radar antenna is distorted. This phenomenon can seriously affect radar angle measurement. In order to solve this problem, this paper presents a method of target angle estimation based on polarization information. Radar receiver has been improved to dual polarization receiver, and sum-difference network is added, generating six channel signals with polarization information. Then signal parameters are brought into analytical formulas for solution. This method can eliminate the coupling angle error of the target under towed decoy jamming, and enable the radar to maintain correct angle measurement and tracking. Simulation results show that the proposed method can estimate the target angle under jamming condition. This is a simple and effective method to resist mainlobe interference, and is very easy to be implemented in engineering. This method has important significance to enhance the anti-jamming ability of radar. |
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