| 前视双基地SAR CS成像算法 |
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| 引用本文： | 蔡复青, 何友, 林雪原, 宋杰. 前视双基地SAR CS成像算法[J]. 武汉大学学报 ( 信息科学版), 2010, 35(11): 1300-1304. |
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| 作者姓名： | 蔡复青 何友 林雪原 宋杰 |
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| 作者单位： | 1海军航空工程学院信息融合研究所,烟台市二马路188号264001 |
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| 基金项目： | 国家自然科学基金资助项目(60672140和60672139) |
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| 摘 要： | 提出了前视双基地SAR CS成像方法。首先研究了前视双基地SAR的成像机理,并建立了信号模型;然后通过时域线性距离徙动补偿将前视双基地SAR进行单站固定等效,并分析了回波信号等效后的方位空变性特点;在此基础上,确定了前视双基地SAR CS成像算法的相位匹配函数;最后通过算法仿真验证了算法的正确性。
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| 关 键 词： | 双基地SAR 前视双基地SAR CS算法 |
| 收稿时间： | 2010-09-15 |
| 修稿时间： | 2010-09-15 |
CS Algorithm for Forward-Looking Bistatic SAR |
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| CAI Fuqing, HE You, LIN Xueyuan, SONG Jie. CS Algorithm for Forward-Looking Bistatic SAR[J]. Geomatics and Information Science of Wuhan University, 2010, 35(11): 1300-1304. |
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| Authors: | CAI Fuqing HE You LIN Xueyuan SONG Jie |
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| Affiliation: | 1Research Institute of Information Fusion,Naval Aeronautical and Astronautical University,188 Erma Road,Yantai 264001,China |
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| Abstract: | The chirp scaling(CS) algorithm for forward-looking bistatic synthetic aperture radar is proposed.Firstly,the imaging theory of forward-looking Bi-SAR is studied and its signal model is either constructed.Then the forward-looking Bi-SAR is degraded into the fixed receiver Bi-SAR by time domain linear range migration compensation,and the azimuth Doppler modulation rate change of the degenerated signals are analyzed;Based on these,the Bi-SAR chirp scaling algorithm is brought forward with the new match functions.Finally,the computer simulation verifies the validity of this approach. |
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| Keywords: | bistatic SAR forward-looking Bi-SAR chirp scaling algorithm |
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