| 米波雷达最大似然超分辨测高技术研究 |
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| 引用本文： | 刘张林,陈伯孝,杨雪亚,张文俊.米波雷达最大似然超分辨测高技术研究[J].雷达科学与技术,2011(4):308-310. |
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| 作者姓名： | 刘张林 陈伯孝 杨雪亚 张文俊 |
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| 作者单位： | 中国电子科技集团公司第三十八研究所;西安电子科技大学雷达信号处理重点实验室; |
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| 摘 要： | 米波雷达垂直面波束比较宽,直达波与多径相干叠加导致垂直面波瓣分裂,波束比幅或DBF(数字波束形成)搜索的方法无法进行测高。介绍了最大似然算法原理,分析了米波雷达反射场的几何模型,提出了与阵列几何模型匹配的最大似然阵列超分辨测高方法,给出了算法的具体实现步骤,有效解决了米波雷达低仰角测高问题。针对试验米波雷达系统采集的实际回波,给出了DBF搜索、传统最大似然及该文算法的处理结果,试验结果也表明了该方法的优良测高性能。
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| 关 键 词： | 米波雷达 最大似然 超分辨 测高 |
Research on Height Finding Technique Based on Maximum Likelihood Super Resolution in Meter-Wave Radar |
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| LIU Zhang-lin,CHEN Bo-xiao,YANG Xue-ya,ZHANG Wen-jun.Research on Height Finding Technique Based on Maximum Likelihood Super Resolution in Meter-Wave Radar[J].Radar Science and Technology,2011(4):308-310. |
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| Authors: | LIU Zhang-lin CHEN Bo-xiao YANG Xue-ya ZHANG Wen-jun |
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| Institution: | LIU Zhang-lin1,CHEN Bo-xiao2,YANG Xue-ya2,ZHANG Wen-jun1(1.No.38 Research Institute of CETC,Hefei 230088,China,2.National Key Lab of Radar Signal Processing,Xidian University,Xi'an 710071,China) |
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| Abstract: | Meter-wave radar has a wide beam in vertical plane.The coherent superposition of direct wave and multipath wave causes the beam to split.Thus,amplitude-comparison or DBF(digital beam forming) cannot be used in height finding.The theory of maximum likelihood algorithm and the geometry model of reflection environment in meter-wave radar are introduced.A height finding technique based on maximum likelihood super resolution matched by geometry model and its realization steps are presented in this paper.This met... |
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| Keywords: | meter-wave radar maximum likelihood super resolution height finding |
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