| 极化信息在雷达目标检测中的得益分析 |
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| 引用本文： | 李永祯,程旭,李棉全,王雪松. 极化信息在雷达目标检测中的得益分析[J]. 现代雷达, 2013, 35(2): 35-39 |
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| 作者姓名： | 李永祯 程旭 李棉全 王雪松 |
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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,长沙410073;国防科技大学电子科学与工程学院,长沙410073 |
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| 基金项目： | 国家自然科学基金重点项目，国家自然科学基金青年科学基金项目 |
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| 摘 要： | 极化是电磁波的基本属性之一,目标在反射电磁波的同时会改变电磁波的极化状态,其变极化效应蕴含了目标的特征信息,充分利用极化信息可以有效提高雷达系统的反杂波、反隐身、目标识别和抗干扰性能。文中针对雷达单极化、双极化和全极化测量体制,从目标的散射结构出发分析了极化信息对雷达目标检测信噪比的改善程度,为雷达极化方式和极化测量体制的选择、极化检测算法的优化设计等应用提供了有益参考和理论指导。
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| 关 键 词： | 雷达目标 极化检测 信噪比 极化得益 |
A Study on Polarization Gain for Radar Targets Detection |
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| LI Yongzhen,CHENG Xu,LI Mianquan and WANG Xuesong. A Study on Polarization Gain for Radar Targets Detection[J]. Modern Radar, 2013, 35(2): 35-39 |
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| Authors: | LI Yongzhen CHENG Xu LI Mianquan WANG Xuesong |
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| Affiliation: | 1,2(1.State Key Loboratory of Complex Electromagnetic Environment Effects on Electronics and Information System,Changsha 410073,China)(2.School of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China) |
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| Abstract: | As the essential property of electromagnetic wave, polarization state of the target will be changed when the wave is reflected. The characteristic information of the target is implied by its depolarization effect. By making sufficiently use of the polarization characteristics of the target, the capability of anti-jamming, anti-stealth and recognition of radar will be enhanced efficiently. The polarization gain of signal-noise-rate(SNR) of radar target detection with different scattering mechanism in instance of mono-polarization, dual-polarization and fully-polarization radar has been analyzed in this paper. The research results are useful for the choice of radar polarization mode and the optimization of radar detection algorithm. |
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| Keywords: | radar target polarization detection SNR polarization gain |
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