周生华1,2,
刘宏伟1,2
①.西安电子科技大学雷达信号处理国家重点实验室 ??西安 ??710071
②.西安电子科技大学信息感知技术协同创新中心 ??西安 ??710071
③.空军预警学院 ??武汉 ??430019
基金项目:国家自然科学基金(61401329, 61372134, 61372136)，国家****科学基金(61525105)
详细信息
作者简介:张新勋(1982–)，男，陕西岐山人，西安电子科技大学博士生，研究方向为MIMO雷达、极化雷达信号处理及波形设计。E-mail: zxx819@sina.com
通讯作者:张新勋 ? zxx819@sina.com
中图分类号:TN959.1计量
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被引次数:0
出版历程
收稿日期:2018-12-13
修回日期:2019-01-06
Influence of Target Polarization Scattering Characteristics on the Detection Performance of Polarization Diversity Radar
ZHANG Xinxun1,2,3,,,ZHOU Shenghua1,2,
LIU Hongwei1,2
①. National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China
②. Collaborative Innovation Center of Information Sensing and Understanding at Xidian University, Xi’an 710071, China
③. Air Force Early Warning Academy, Wuhan 430019, China
Funds:The National Natural Science Foundation of China (61401329, 61372134, 61372136), The National Science Fund for Distinguished Young Scholars (61525105)
More Information
Corresponding author:ZHANG Xinxun, zxx819@sina.com
摘要
摘要:针对全极化、混合极化和单极化3种典型体制的极化分集雷达(PDR)系统，该文分析了目标极化散射特性对系统检测性能的影响。基于目标极化散射统计模型和雷达接收电压方程，分别推导了3种体制下的目标回波向量的统计特性。在高斯背景下，设计了奈曼-皮尔逊准则下的最优极化分集多通道融合检测算法，并推导了虚警概率和检测概率的闭式表达式。仿真结果表明，当系统信噪比(SNR)一定时，目标极化散射分量间的相关性是影响系统检测性能的主要因素，特别是匹配极化散射分量和交叉极化散射分量间的相关性。此外，全极化体制和单极化体制的检测性能比混合极化体制稳健。
关键词:极化分集雷达/
目标检测/
目标极化散射特性/
工作体制/
相关系数
Abstract:This study investigates the influence of the target polarization scattering characteristics on the detection performance of Polarization Diversity Radar (PDR) system with three typical working modes: full polarization mode, mixed polarization mode, and single polarization mode. The statistical properties of target echo signal corresponding to the three modes are separately deduced based on the statistical model of target polarization scattering and the receiving voltage equations. Furthermore, the optimal polarization diversity multi-channel fusion detection algorithm is designed under the Neyman-Pearson criterion in the background of Gaussian distribution, and closed-form expressions of probability of false alarm and detection are derived. The simulation results show that the correlations between the polarization scattering components of the target, particularly the correlations between the matched and cross polarization scattering components of the target, have greater effect on the detection performance of PDR for a given system Signal-to-Noise Ratio (SNR). In addition, the detection performance of the full and single polarization modes is more robust than that of the mixed polarization mode.
Key words:Polarization Diversity Radar (PDR)/
Target detection/
Polarization scattering properties/
Working mode/
Correlation coefficient
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