| 基于AM-LFM分解的微动信号提取 |
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| 引用本文： | 贺思三,周剑雄,赵会宁,付强.基于AM-LFM分解的微动信号提取[J].电子与信息学报,2010,32(3):554-558. |
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| 作者姓名： | 贺思三 周剑雄 赵会宁 付强 |
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| 作者单位： | 1. 国防科学技术大学电子科学与工程学院,长沙,410073
2. 空军工程大学导弹学院,三原,713800 |
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| 摘 要： | 该文针对微多普勒信号与目标主体回波信号分离的问题，分析了包含微动结构的雷达回波模型，指出目标主体信号分量多普勒频率是固定的，而微多普勒信号的多普勒频率是时变的，且可用分段的线性调频信号拟合。在此基础上，提出了一种基于调幅-线性调频(AM-LFM)分解的微动信号分离算法，该算法根据调频率来判定各调幅-线性调频分量的对应结构，实现微多普勒信号提取。仿真及实测数据处理结果验证了算法的有效性。
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| 关 键 词： | 信号分离 微多普勒 目标主体 Chirplet 调幅-线性调频 |
| 收稿时间： | 2009-4-2 |
| 修稿时间： | 2009-9-28 |
Micro-Doppler Signal Extraction Based on AM-LFM Decomposition |
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| He Si-san,Zhou Jian-xiong,Zhao Hui-ning,Fu Qiang.Micro-Doppler Signal Extraction Based on AM-LFM Decomposition[J].Journal of Electronics & Information Technology,2010,32(3):554-558. |
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| Authors: | He Si-san Zhou Jian-xiong Zhao Hui-ning Fu Qiang |
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| Affiliation: | School of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China; The Missile Institute of the Air Force Engineering University, Sanyuan 713800, China |
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| Abstract: | The issue of micro-Doppler signal separation from collected data of targets with micro-motion structures is addressed.The signal mode for target with micro-motion structures is analyzed and the results show that the Doppler frequency of main body is constant and the micro-Doppler frequency is time varying,which can be fitted by a series of piecewise linear frequency modulation signal.A method,which decomposes radar signal to AM-LFM (amplitude modulation-linear frequency modulation) components and determines... |
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| Keywords: | Signal separation Micro-Doppler Main body Chirplet AM-LFM |
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