| 移变模式双站SAR信号模型及电磁仿真研究 |
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| 引用本文： | 刘志伟,张月园,陈嘉琪,郑晴.移变模式双站SAR信号模型及电磁仿真研究[J].华东交通大学学报,2012(1):24-29. |
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| 作者姓名： | 刘志伟 张月园 陈嘉琪 郑晴 |
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| 作者单位： | 华东交通大学信息工程学院;南京理工大学通信工程系 |
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| 基金项目： | 国家自然科学基金项目(61061002);华东交通大学科研项目(11XX01) |
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| 摘 要： | 针对移变模式下的双基地合成孔径雷达成像方法及电磁仿真进行了研究。在这一模式下对双基地SAR信号频谱进行分析,结合改进的Loffeld模型进行点目标回波信号分析及成像仿真。与此同时,通过物理光学方法获得三维目标的双基地回波信号,在此基础上分别采用原始与改进的Loffeld模型进行了双站SAR电磁成像仿真实验。点目标及电磁仿真结果均表明,与传统的Loffeld模型相比,改进的Loffeld模型在双基地移变模式下具有更为优良的聚焦性能。
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| 关 键 词： | 双站SAR 移变模式 改进Loffeld模型 物理光学 |
Variant Bistatic SAR Signal Model and EM Simulation |
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| Liu Zhiwei,Zhang Yueyuan,Chen Jiaqi,Zheng Qing.Variant Bistatic SAR Signal Model and EM Simulation[J].Journal of East China Jiaotong University,2012(1):24-29. |
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| Authors: | Liu Zhiwei Zhang Yueyuan Chen Jiaqi Zheng Qing |
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| Institution: | 1.School of Information Engineering,East China Jiaotong University,Nanchang 330013,China 2.Department of Communication Engineering,Nanjing University of Science and Technology,Nanjing 210094,China) |
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| Abstract: | The paper studies variant bistatic synthetic aperture radar(SAR) imaging method and EM simulation.After analyzing spectrum variant bistatic SAR signal,based on extended Loffeld’s bistatic,point target echo signal and EM simulation are conducted.Meanwhile,bistatic echo signal of 3D target is gained through physical optics.Conventional LBF and extended Loffeld’s bistatic formula(ELBF) are adopted respectively to conduct variant bistatic synthetic aperture radar(SAR) imaging method and EM simulation.Results of target and EM simulation show that the ELBF has better focusing property compared with the conventional LBF. |
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| Keywords: | bistatic SAR variant configuration extended Loffeld’s model physical optics |
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