| 基于非均匀采样的小卫星多通道SAR无模糊成像 |
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| 引用本文： | 杨凤凤,王敏,梁甸农.基于非均匀采样的小卫星多通道SAR无模糊成像[J].电子学报,2007,35(9):1754-1756. |
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| 作者姓名： | 杨凤凤 王敏 梁甸农 |
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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： | 当小卫星天线不满足最小天线面积约束时,则出现距离或者方位模糊,无模糊的高分辨成像是小卫星SAR成像处理的关键.本文提出利用分布式小卫星或者小卫星天线的多通道回波数据,在满足广义采样定理的条件下通过插值恢复出无模糊的全方位带宽信号,实现高分辨成像.实验证明,该算法具有操作简单,运算效率高的优点.
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| 关 键 词： | 小卫星 合成孔径雷达 解模糊 非均匀采样 |
| 文章编号： | 0372-2112（2007）09-1754-03 |
| 收稿时间： | 2006-04-11 |
| 修稿时间： | 2006-04-11 |
Small Satellite Multi-Channel SAR Unambiguous Imaging Based on Nonuniform Sampling |
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| YANG Feng-feng,WANG Min,LIANG Dian-nong.Small Satellite Multi-Channel SAR Unambiguous Imaging Based on Nonuniform Sampling[J].Acta Electronica Sinica,2007,35(9):1754-1756. |
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| Authors: | YANG Feng-feng WANG Min LIANG Dian-nong |
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| Institution: | Department of Electronic Science and Engineering,National University of Defence Technology,Changsha,Hunan 410073,China |
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| Abstract: | Small satellite radar dissatisfies the minimum antenna area constraint.Unambiguous SAR imaging of a wide ground area with high azimuth resolution is a contradiction.Under the generalized sampling theorems,nonuniform samples of multiple receiving channels uniquely determine the unambiguous wide bandwidth-limitd signal.A fine resolution unambiguous SAR image can acquired with interpolation.Compared with the array signal processing algorithm for the same purpose,the interpolation algorithm operates more easy and efficiently with high performance. |
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| Keywords: | small satellite SAR solve ambiguity nonuniform samplingAn Algorithm of Multiple Criteria Decision-Making Based on |
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