| 双基地SAR的QBP成像算法 |
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| 引用本文： | 徐三元,王建国.双基地SAR的QBP成像算法[J].宇航学报,2011,32(2):395-400. |
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| 作者姓名： | 徐三元 王建国 |
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| 作者单位： | 电子科技大学电子工程学院，成都 610054 |
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| 摘 要： | 时域BP算法能够灵活处理双基地SAR信号，但是运算量很大。本文根据系统工作模型，推导出SAR信号聚束化后方位向带宽与成像区域的尺寸成正比，适合采用QBP算法进行成像；研究了聚束参考点的变化对信号带宽的影响，给出了双基地QBP算法的具体实现步骤，分析了QBP算法的运算复杂度。理论分析、仿真实验和实测数据结果验证了QBP算法的有效性。
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| 关 键 词： | 双基地 成像算法 四杈树 合成孔径雷达 |
| 收稿时间： | 2010-01-06 |
QBP Imaging Algorithm for the Bistatic SAR |
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| XU San-yuan,WANG Jian-guo.QBP Imaging Algorithm for the Bistatic SAR[J].Journal of Astronautics,2011,32(2):395-400. |
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| Authors: | XU San-yuan WANG Jian-guo |
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| Institution: | XU San-yuan,WANG Jian-guo(School of Electronic Engineering,UESTC,Chengdu 610054,China) |
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| Abstract: | The standard backprojection(BP) algorithm can flexibly deal with bistatic SAR signal data,but its computational load is heavy.It is shown that the azimuth bandwidth of the bistatic SAR is proportional to the size of the imaging patch after SAR signal is spotlighted,and the quadtree backprojection(BP) algorithm can provide a large reduction of the computational load compared to the standard backprojection algorithm.The effect on change in spotlight reference points signal bandwidth is discussed and an implem... |
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| Keywords: | Bistatic Iimaging algorithm Quadtree Synthetic aperture radar(SAR) |
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