| 分布式无源雷达成像及其空间谱特性分析 |
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| 引用本文： | 徐浩,刘畅畅,何学智,王东进,陈卫东.分布式无源雷达成像及其空间谱特性分析[J].现代雷达,2011,33(9):42-47. |
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| 作者姓名： | 徐浩 刘畅畅 何学智 王东进 陈卫东 |
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| 作者单位： | 中国科学技术大学电子工程与信息科学系,合肥,230027 |
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| 基金项目： | 国家自然科学基金资助项目(61172155); 中国博士后科学基金资助项目(20090460726) |
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| 摘 要： | 针对随机分布辐射源、分布式接收雷达以及目标构成的三维空间构型,推导了基于单频辐射信号的一次快拍成像公式,提出了球坐标系统下的分布式无源雷达成像方法,并在空间谱域探讨了成像分辨率特性及其影响因素。以GPS辐射源为例仿真验证了文中成像方法的有效性,并根据空间谱填充效果对比,分析了收发空间构型和数目等因素对成像的影响,为探索利用GPS等分布式非合作辐射源实现无源成像提供了一条可能的途径。
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| 关 键 词： | 无源雷达成像 球坐标系统 空间谱填充 成像分辨率 |
Analysis of Distributed Passive Radar Imaging and Space-spectrum Property |
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| XU Hao,LIU Chang-chang,HE Xue-zhi,WANG Dong-jin,CHEN Wei-dong.Analysis of Distributed Passive Radar Imaging and Space-spectrum Property[J].Modern Radar,2011,33(9):42-47. |
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| Authors: | XU Hao LIU Chang-chang HE Xue-zhi WANG Dong-jin CHEN Wei-dong |
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| Affiliation: | XU Hao,LIU Chang-chang,HE Xue-zhi,WANG Dong-jin,CHEN Wei-dong(Department of Electronic Engineering and Information Science,University of Science and Technology of China,Hefei 230027,China) |
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| Abstract: | The 3-D space formation composed of distributed radiation sources,distributed receivers and targets is discussed in this paper.At one snapshot,the imaging formula based on single-frequency radiation signal is derived in detail.Then the distributed passive radar imaging method in spherical coordinate system is proposed,and the imaging resolution and its influencing factors is discussed in space-spectrum.Computer simulation using GPS radiation signal confirms the feasibility of the method.Based on the compari... |
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| Keywords: | passive radar imaging spherical coordinate system space-spectrum image resolution |
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