| MLFMA在运动目标多普勒回波数值仿真中的应用 |
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| 引用本文： | 向道朴,周东明,何建国.MLFMA在运动目标多普勒回波数值仿真中的应用[J].国防科技大学学报,2010,32(2):114-118. |
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| 作者姓名： | 向道朴 周东明 何建国 |
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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 |
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| 摘 要： | 提出了一种应用准静态技术,结合快速多级子算法计算任意形状的运动目标多普勒信号的方法,对目标的几种典型的微动多普勒信号进行了仿真,并应用高分辨时频分析算法对仿真得到的微多普勒信号进行了分析,提取出了微多普勒瞬时频率,并与相应微动规律的点目标微多普勒瞬时频率进行对比。结果表明,二者具有相同的变化规律,从而证明本文提出的方法是有效的。
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| 关 键 词： | 准静态 快速多级子 微动 时频分析 |
| 收稿时间： | 9/3/2009 12:00:00 AM |
The Application of MLFMA in Doppler Echo Simulation with Motion Body Target |
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| XIANG Daopu,ZHOU Dongming and HE Jianguo.The Application of MLFMA in Doppler Echo Simulation with Motion Body Target[J].Journal of National University of Defense Technology,2010,32(2):114-118. |
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| Authors: | XIANG Daopu ZHOU Dongming and HE Jianguo |
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| Affiliation: | College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | A method based on quasi-static and Multi-level Fast Multi-pole Algorithm (MLFMA) is introduced to compute the micro-Doppler echo by motion body targeting with arbitrary shape. The joint time frequency analysis algorithm is used to calculate some typical motion's micro-Doppler echo. Furthermore, efforts were made to extract the instantaneous frequency and then compare it with the point target's instantaneous frequency in accord with the same micro-motion. The results indicate that they share the same trend and the current method is efficient. |
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| Keywords: | qusi-static Multi-level Fast Multi-pole Algorithm(MLFMA) micro-motion joint time frequency analysis |
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