一种高分辨率聚束SAR运动补偿算法研究

麻丽香; 程黎; 唐禹

doi:10.3724/SP.J.1146.2009.00197

一种高分辨率聚束SAR运动补偿算法研究

doi: 10.3724/SP.J.1146.2009.00197

麻丽香^①;程黎,,
程黎,
唐禹

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出版历程
- 收稿日期: 2009-02-19
- 修回日期: 2009-12-21
- 刊出日期: 2010-03-19

Research on Motion Compensation Algorithm for High Resolution Spotlight SAR

Ma Li-xiang^{①;程黎
,},
Cheng Li,
Tang Yu

摘要

摘要: 聚束SAR模式是获得高分辨率雷达图像的一种有效的方法。由于合成孔径时间较长，载机在合成孔径时间内飞行的非平稳性造成图像严重散焦，并且高分辨率SAR的距离向信号也存在相位误差。该文提出一种新的基于回波数据的运动补偿方法对载机的位置误差、距离向相位误差以及残余包络误差进行有效的估计，得到高分辨率的聚束SAR图像，并通过实测数据验证了该文方法的有效性。
- 合成孔径雷达(SAR); 运动补偿; 极坐标算法(PFA)
Abstract: Spotlight SAR is an efficiency way to obtain high resolution radar image. The non-stability of the aircraft motion during the long synthetic aperture time can make the image suffer the severe defocus, and there is phase error in the range direction in the high resolution SAR system. This paper presents a novel signal processing method based on echo signal to get high definition resolution spotlight SAR image, which can make an effective estimation on the aircraft position error, the phase error in range direction and the residual envelop error. The experiment results show that the proposed approach can get the high quality SAR image from raw data.

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参考文献(1)

周锋，邢孟道，保铮. 一种无人机机载SAR运动补偿的方法.电子学报, 2006, 36(6): 1002-1007.Zhou Feng, Xing Meng-dao, and Bao Zheng. A method ofmotion compensation for unmanned aerial vehicles borneSAR. Acta Electronica Sinica, 2006, 36(6): 1002-1007.[2]Jakowatz C V, Walhl D E jr, and Eichel P H. et al..Spotlight-Mode Synthetic Aperture Radar: A SignalProcessing Approach. Kluwer Academic publishers. 1996:107-113.[3]Tsunoda S I, Pace F, Stence J, Hensley W H, Doerry A W,and Walker B C. Lynx : A high resolution synthetic apertureradar [C] . Aerospace Conference Proceeding, USA, March,2000, 5: 51-58.[4]王鹏波，周荫清，陈杰，等. 姿态指向稳定度对聚束SAR成像的影响. 现代雷达, 2007, 29(8): 18-21.Wang Peng-bo, Zhou Yin-qing, and Chen Jie. Effect ofsatellite attitude stability on spotlight SAR imaging. ModernRadar, 2007, 29(8): 18-21 .[5]丁赤飙. 基于惯导系统的机载SAR运动补偿精度分析[J].电子与信息学报.2002, 24(1):12-18浏览[6]盛蔚，房建成，韩晓英. 运动补偿用惯性器件误差对SAR成像分辨率的影响研究. 航空学报, 2007, 28(5): 1162-1167.Sheng Wei, Fang Jian-cheng, and Han Xiao-ying. Study oneffect of inertial device error in motion compensationsubsystem on SAR image resolution. Acta AeronauticaEtastronautica Sinica, 2007, 28(5): 1162-1167.[7]孙进平, 袁运能, 王俊, 等. CTZ在聚束SAR极坐标格式成像算法中的应用. 系统工程与电子技术, 2002, 24(10): 4-7.Sun Jin-ping, Yuan Yun-neng, and Wang Jun, et al..Application of CZT in polar format algorithm of spotlightSAR. Systems Engineering and Electronics, 2002, 24(10): 4-7.[8]Burns B L and Cordaro J T. A SAR image formationalgorithm that compenates for the spatially variant effects ofantenna motion[J].SPIE Proceedings.1994, 2230:14-25[9]Stuff M S, Sullivan R C, and Thelen B J. Automated two andthree dimensional fine resolution, radar imaging of rigidtargets with arbitrary unknown motion. Proceedings of the1994 SPIE International Symposium: Algorithms forSynthetic Aperture Radar Imagery, Orlando, FL, April 1994,2230: 180-189.[10]唐禹，王岩飞，张冰尘. 滑动聚束SAR成像模式研究[J].电子与信息学报.2007, 29(1):26-29浏览

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