| 利用SPECAN算法的聚束SAR成像处理 |
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| 引用本文： | 范馨月,皮亦鸣,付毓生,周非,李振.利用SPECAN算法的聚束SAR成像处理[J].电子科技大学学报(社会科学版),2005(2). |
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| 作者姓名： | 范馨月 皮亦鸣 付毓生 周非 李振 |
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| 作者单位： | 电子科技大学电子工程学院 成都610054
(范馨月，皮亦鸣，付毓生，周非)，电子科技大学电子工程学院 成都610054(李振) |
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| 基金项目： | 高校博士点专项基金资助项目(20030614001) |
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| 摘 要： | 讨论了距离向去调频聚束模式SAR信号的回波模型及特点,通过对聚束SAR信号的时、频域关系的分析,给出了适合去调频后的聚束SAR数据的成像算法。该算法结合了SPECAN算法高效和标准条带成像算法精确的优点,首先采用SPECAN算法对原始数据距离向去斜,其次采用距离-多普勒算法实现方位精确聚焦,与传统的距离-多普勒算法相比,成倍地降低处理的数据量,从而可实现聚束SAR的实时成像处理。对Ku波段实际飞行数据采用该算法压缩得到高分辨率的图像,验证了理论分析的正确性和所用方法的可行性。
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| 关 键 词： | 聚束SAR SPECAN算法 去调频 条带SAR |
Imaging of Spotlight Synthetic Aperture Radar by Applying SPECAN Approach |
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| FAN Xin-yue,PI Yi-ming,FU Yu-sheng,ZHOU Fei,LI Zhen.Imaging of Spotlight Synthetic Aperture Radar by Applying SPECAN Approach[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2005(2). |
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| Authors: | FAN Xin-yue PI Yi-ming FU Yu-sheng ZHOU Fei LI Zhen |
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| Abstract: | This article discusses the character of range-dechirped spotlight SAR signal, analyzes the time and frequency domain character of dechirp SAR signal, presents imaging method of spotlight range-dechirped raw data.The new algorithm combines the advantages of two processing approaches: the efficiency of SPECAN algorithm and the precision of stripmap focusing technique, the first step of the proposed algorithm implements deramp technique representing a simplified version of the SPECAN approach, the second processing carries out the residual focusing via the use of a conventional stripmap processing procedure,in comparison with the range doppler method,this algorithm decreases the processed data with a little amount of calculation increased.The Ku band airborne spotlight SAR imaging experiment confirms its availability. |
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| Keywords: | spotlight SAR SPECAN algorithm dechirp stripmap SAR |
| 本文献已被 CNKI 等数据库收录！ |
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