| 运动补偿与UWB SAR中RD成像算法结合的实现方法 |
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| 引用本文： | 郭微光,刘光平,董臻,梁甸农. 运动补偿与UWB SAR中RD成像算法结合的实现方法[J]. 国防科技大学学报, 2004, 26(1): 56-59 |
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| 作者姓名： | 郭微光 刘光平 董臻 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;国防科技大学电子科学与工程学院,湖南,长沙,410073;国防科技大学电子科学与工程学院,湖南,长沙,410073;国防科技大学电子科学与工程学院,湖南,长沙,410073 |
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| 基金项目： | 雷达信号处理国防科技重点实验室基金资助项目(51431020101KG01) |
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| 摘 要： | 分析了机载合成孔径雷达(SAR)中载机运动误差对接收信号的影响,指出在运动补偿处理中可以将距离向误差分解为空不变项和空变项,在此基础上采用一阶和二阶运动补偿的方法来对两个误差项进行补偿.为了将测量的运动误差数据应用到高分辨率成像中,提出了一种与距离多普勒(RD)成像算法相结合的运动补偿方案.通过对仿真数据的测试,本文方法得到了验证.
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| 关 键 词： | 机载合成孔径雷达 运动补偿 距离多普勒成像算法 |
| 文章编号： | 1001-2486(2004)01-0056-04 |
| 收稿时间： | 2003-09-07 |
| 修稿时间： | 2003-09-07 |
Airborne SAR Motion Compensation Based on RD Algorithm |
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| GUO Weiguang,LIU Guangping,DONG Zhen and LIANG Diannong. Airborne SAR Motion Compensation Based on RD Algorithm[J]. Journal of National University of Defense Technology, 2004, 26(1): 56-59 |
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| Authors: | GUO Weiguang LIU Guangping DONG Zhen LIANG Diannong |
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| Affiliation: | College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | This paper analyzes how the trajectory deviations in the airborne synthetic aperture radar (SAR) can affect the received data. It shows that the range error can be separated into space invariant and variant contributions, which can be compensated by the first-order and second-order motion compensation processing. To realize high resolution SAR image, this paper represents a motion compensation method integrated in range-doppler (RD) algorithm. Finally, the analysis and scheme are validated by the results on simulated data. |
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| Keywords: | airborne synthetic aperture radar motion compensation range-Doppler algorithm |
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