| 基于MP稀疏分解的弹道中段目标微动ISAR成像新方法 |
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| 引用本文： | 雷腾,刘进忙,李松,胡国平.基于MP稀疏分解的弹道中段目标微动ISAR成像新方法[J].系统工程与电子技术,2011,33(12):2649-2654. |
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| 作者姓名： | 雷腾 刘进忙 李松 胡国平 |
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| 作者单位： | 空军工程大学导弹学院, 陕西 三原 713800 |
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| 基金项目： | 陕西省自然科学基金(2010JQ8007)资助课题 |
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| 摘 要： | 弹道目标在中段的运动包括轨道运动和微动。与轨道运动相比,弹道目标的微动能引起目标相对雷达视线角更为快速的变化,有利于逆合成孔径雷达(inverse synthetic aperture radar, ISAR)成像。针对自旋对称弹头的微动特性,提出了一种基于匹配追踪(matching pursuit, MP)稀疏分解的微动ISAR成像算法,分析了成像平面和成像所需积累转角,并通过计算机仿真与传统的距离－多普勒(range-Doppler, RD)、魏格纳－维尔(Wigner-Ville, WV)成像算法进行了比较。仿真结果表明：本文算法具有更好的成像精度和稳定性,且不受交叉项的干扰,是一种有效的微动目标成像算法。
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| 关 键 词： | 微动 逆合成孔径雷达成像 稀疏分解 弹道目标 |
A novel ISAR imaging method of ballistic midcourse targets based on MP sparse decomposition |
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| LEI Teng,LIU Jin-mang,LI Song,HU Guo-ping.A novel ISAR imaging method of ballistic midcourse targets based on MP sparse decomposition[J].System Engineering and Electronics,2011,33(12):2649-2654. |
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| Authors: | LEI Teng LIU Jin-mang LI Song HU Guo-ping |
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| Institution: | Missile Institute, Air Force Engineering University, Sanyuan 713800, China |
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| Abstract: | The motion of ballistic midcourse targets include orbit motion and micro-motion,compared with orbit motion,the micro-motion of ballistic targets causes the target more rapid change relative to the angle of radar sight,which is benefit to the inverse synthetic aperture radar(ISAR) imaging.According to the micro-motion characteristic of spin symmetric warhead,a new micro-motion imaging algorithm based on the matching pursuit(MP) sparse decomposition is proposed,the imaging plane and accumulation angle are ana... |
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| Keywords: | micro-motion inverse synthetic aperture radar(ISAR) imaging sparse decomposition ballistic target |
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