| 冲激SAR成像的分辨率估计 |
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| 引用本文： | 董臻,常文革,梁甸农.冲激SAR成像的分辨率估计[J].国防科技大学学报,2002,24(5):61-64. |
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| 作者姓名： | 董臻 常文革 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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| 基金项目： | 国家部委基金项目资助 (7.5 .3 .2 ) |
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| 摘 要： | 后向投影 (BP)算法是一种被广泛应用于冲激SAR的成像算法。当冲激SAR的发射信号是某一类冲激信号时 ,根据冲激SAR成像的特点 ,推导出BP算法的方位分辨率与成像积累角、信号中心频率的关系。仿真结果表明 ,在相当范围内 ,估计公式都是准确的
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| 关 键 词： | 冲激合成孔径雷达 冲激信号 BP算法 辛克函数 分辨率 |
| 文章编号： | 1001-2486(2002)05-0061-04 |
| 收稿时间： | 2002/5/23 0:00:00 |
| 修稿时间： | 2002年5月23日 |
The Estimation of Resolution for Impulse SAR's Imaging |
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| DONG Zhen,Chang Wenge and LIANG Diannong.The Estimation of Resolution for Impulse SAR''s Imaging[J].Journal of National University of Defense Technology,2002,24(5):61-64. |
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| Authors: | DONG Zhen Chang Wenge and LIANG Diannong |
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| Institution: | 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: | Back projection(BP)algorithm is a popular imaging algorithm for impulse SAR. The relation between BP's azimuth resolution and azimuth angle as well as signal's center frequency is discovered when the radar's transmitted signal is one kind of impulse signal based on the characteristic of the impulse SAR imaging.The simulation results prove the estimation formula's validity. |
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| Keywords: | impulse SAR impulse signal BP algorithm sinc function resolution |
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