万显荣,,
易建新,
龚子平
武汉大学电子信息学院 武汉 430072
基金项目:国家自然科学基金(61931015, 62071335, 61831009)，湖北省科技创新项目(2019AAA061)
详细信息
作者简介:张勋：男，1989年生，博士生，研究方向为雷达信号处理、实时信号处理
万显荣：男，1975年生，博士，教授，博士生导师，研究方向为新体制雷达设计，如外辐射源雷达系统、高频天波雷达系统及阵列信号处理
易建新：男，1989年生，博士，副研究员，研究方向为雷达信号处理、目标跟踪和信息融合
龚子平：男，1977年生，博士，讲师，研究方向为电波传播与无线电海洋遥感
通讯作者:万显荣 xrwan@whu.edu.cn
中图分类号:TN958.57计量
文章访问数:154
HTML全文浏览量:64
PDF下载量:35
被引次数:0
出版历程
收稿日期:2020-12-04
修回日期:2021-04-08
网络出版日期:2021-05-06
刊出日期:2021-11-23
Reference Signal Trusted Reconstruction for Passive Radar Based on Optimal Clutter Rejection
Xun ZHANG,Xianrong WAN,,
Jianxin YI,
Ziping GONG
School of Electronic Information, Wuhan University, Wuhan 430072, China
Funds:The National Natural Science Foundation of China (61931015, 62071335, 61831009), The Technological Innovation Project of Hubei Province (2019AAA061)
摘要
摘要:参考信号重构是数字电视外辐射源雷达信号处理的关键技术之一，重构信号质量直接影响监测信号中时域杂波抑制效果。针对工程应用中重构的参考信号与实际发射信号失配的问题，该文以监测信号时域杂波抑制效果最优为指标，提出一种基于“解调-重调制”的参考信号可信重构方法。首先介绍参考信号重调制方法并建立基于非理想发射信号的信号模型；然后推导了重调制参考信号与监测信号时域杂波抑制效果间的理论关系，基于杂波抑制效果最优的准则，得到可信重构参考信号；最后仿真和实测数据验证了该参考信号可信重构方法的有效性。
关键词:外辐射源雷达/
参考信号重构/
杂波抑制/
可信重构/
调制误差比
Abstract:Reference signal reconstruction is one of the key technologies for signal processing of passive radar based on digital TV signals. The quality of the reconstructed signal affects directly the time-domain clutter suppression effect of the surveillance signal. To solve the problem that the reconstructed reference signal can not match the actual transmitted signal, this paper proposes a reference signal trusted reconstruction method based on “Demodulation-Remodulation” with the indicator that the optimal time-domain clutter suppression effect of the surveillance signal. First, the reference signal remodulation method is introduced and a signal model is established based on the non-ideal transmitted signal. Then, the theoretical relationship between the remodulation reference signal and the time-domain clutter suppression of the surveillance signal is derived. Based on the criterion of the optimal clutter suppression, the trusted reconstruction of the reference signal is obtained. Finally, simulation and field experiment verify the effectiveness of the reference signal trusted reconstruction method.
Key words:Passive radar/
Reference signal reconstruction/
Clutter suppression/
Trusted reconstruction/
Modulation Error Ratio(MER)
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