| 基于瞬态极化时频分布及奇异值特征提取的雷达目标识别 |
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| 引用本文： | 曾勇虎,王雪松,肖顺平,庄钊文. 基于瞬态极化时频分布及奇异值特征提取的雷达目标识别[J]. 电子学报, 2005, 33(3): 571-573 |
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| 作者姓名： | 曾勇虎 王雪松 肖顺平 庄钊文 |
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| 作者单位： | 国防科技大学电子科学与工程学院,湖南,长沙,410073;洛阳市061信箱,河南,洛阳,471003;国防科技大学电子科学与工程学院,湖南,长沙,410073 |
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| 基金项目： | 国家重点基础研究发展计划(973计划),全国高等学校优秀博士学位论文作者专项基金,国家预研基金 |
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| 摘 要： | 本文介绍了瞬态极化时频分布的概念,并给出了瞬态极化Wigner-Ville分布及伪Wigner-Ville分布的定义,用以刻画雷达目标回波在时频域上的极化特性.然后,由回波的瞬态极化伪Wigner-Ville分布各分量的奇异值组成特征矢量,以BP神经网络作为分类器进行了目标识别实验.实验结果表明,与传统的对目标极化回波的两个分量分别作时频分析的处理方法相比,文中方法具有更好的目标识别性能.
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| 关 键 词： | 瞬态极化 时频分布 目标识别 |
| 文章编号： | 0372-2112(2005)03-0571-03 |
| 收稿时间： | 2003-12-16 |
Radar Target Recognition Based on Instantaneous Polarization Time-Frequency Distribution and Singular Values Feature Extraction |
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| ZENG Yong-hu,WANG Xue-song,XIAO Shun-ping,ZHUANG Zhao-wen. Radar Target Recognition Based on Instantaneous Polarization Time-Frequency Distribution and Singular Values Feature Extraction[J]. Acta Electronica Sinica, 2005, 33(3): 571-573 |
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| Authors: | ZENG Yong-hu WANG Xue-song XIAO Shun-ping ZHUANG Zhao-wen |
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| Affiliation: | 1. School of Electronic Science and Engineering,National University of Defense Technology,Changsha,Hunan 410073,China;2. P.O.Box 061,Luoyang,Henan 471003,China |
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| Abstract: | This paper introduces the concept of instantaneous polarization time-frequency distribution(InPol TFD),and presents the definition of instantaneous polarizatio n Wigner-Ville distribution(WVD) and pseudo Wigner-Ville distribution(PWD),whi ch are used to describe the polarization property of radar target's return in ti me-frequency domain.Next,a feature vector,formed by the singular values of each component of the InPol PWD of target's return,is used as input vector for the c lassifier based on BP neuron network.The target recognition results show that th e proposed method has better performance than conventional one. |
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| Keywords: | instantaneous polarization time-frequency distribution target recognition |
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