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一种交替发射模式的机载MIMO-SAR下视三维成像方法 被引量：4

Imaging method of airborne downward-looking 3D-MIMO-SAR with alternate-transmitting mode
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摘要 对阵列天线合成孔径雷达三维成像问题进行了研究.针对传统单发模式下视三维合成孔径雷达成像所需天线阵元多、空间利用率低的问题,提出了一种基于交替发射模式的多输入多输出合成孔径雷达下视三维成像方法.首先分析了交替发射模式下的下视三维合成孔径雷达回波信号模型,其次结合等效相位中心原理和波束形成技术给出了机载多输入多输出合成孔径雷达下视三维成像方法.该方法可以大幅减少天线阵元的数目,提高雷达平台的空间利用率,有效降低工程实现难度. By study of the problem of three-dimensional （3D） imaging method of linear arrays synthetic aperture radar （LA-SAR）, the conventional LA-SAR with a single transmitting antenna requires a number of receiving antennas to meet the requirement of the spatial sampling rate, which is difficult to implement. To solve the problem, a novel imaging method of down-looking 3D-MIMO-SAR based on the alternatetransmitting mode is proposed. Firstly, the 3-D echo signal model based on the alternate transmitting mode is analyzed. Then by combining equivalent phase center theory and beam-forming technology, the imaging method of downward-looking 3D-MIMO-SAR is put forward in detail, which can cut down the number of antennas significantly, improve the spatial efficiency of the radar platform and reduce the difficulty of project implementation. Finally, the effectiveness of this algorithm is validated by the simulation results.
作者 黄旭华 李项军 方逸洪
机构地区 空军工程大学防空反导学院 中国人民解放军 中国人民解放军
出处 《西安电子科技大学学报》 EI CAS CSCD 北大核心 2013年第3期152-159,共8页 Journal of Xidian University
基金 国家自然科学基金资助项目(60971100)
关键词 多输入多输出雷达 合成孔径雷达成像 下视三维成像 等效相位中心 multy input multy output radar synthetic aperture radar imaging downward-looking 3-D imaging equivalent phase center
分类号 TN957 [电子电信—信号与信息处理]
  • 相关文献

参考文献14

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二级参考文献36

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共引文献30

同被引文献48

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引证文献4

二级引证文献12

西安电子科技大学学报
2013年 第3期

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