一种改进的斜视SAR运动补偿波数域算法
doi: 10.3724/SP.J.1146.2007.01110
A Kind of Method of Extended Wavenumber Domain Algorithm for Squint SAR Motion Compensation
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摘要: 准确的运动补偿是高分辨率机载SAR成像的关键。为了获得高质量的斜视SAR图像，该文详细研究了用改进的波数域算法处理带有运动误差的斜视SAR数据，提出了一种改进的斜视SAR运动补偿波数域算法，并用该算法进行了点目标仿真和对原始数据成像，结果表明，该算法对处理带有运动误差的斜视SAR数据有很好的效果。Abstract: Accurate motion compensation is a key issue for high-resolution airborne SAR imaging. In order to attain high-quality squint SAR images, it is detailedly discussed that Extended Wavenumber Domain (EWD) algorithm combines two-step motion compensation technique processing squint SAR data affected by motion error in the paper，a kind of method of squint EWD algorithm is put forward, simulation and real SAR data processing results with this method are given to prove the feasibility of such algorithm.
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Fornaro G, Franceschetti G, and Perna S. Motioncompensation errors: Effects on the accuracy of airborne SARimages. IEEE Trans. on Aerospace and Electronic Systems,2005, 41(4): 1338-1352.[2]Macedo K A C and Scheiber R. Precise topography- andaperture-dependent motion compensation for airborne SAR[J].IEEE Geoscience and Remote Sensing Letters.2005, 2(2):172-176[3]Fornaro G, Franceschetti G, and Perna S. On center-beamapproximation in SAR motion compensation[J].IEEEGeoscience and Remote Sensing Letters.2006, 3(2):276-280[4]Reigber A, Potsis A, Alivizatos E, Uzunoglu N, and MoreiraA. Wavenumber domain SAR focusing with integratedmotion compensation. IGARSS '03. Proceedings, 2003, 3:1465-1467.[5]Moreira A and Huang Y. Airborne SAR processing of highlysquinted data using a chirp scaling approach with integratedmotion compensation[J].IEEE Trans. on Geoscience andRemote Sensing.1994, 32:1029-1040 -
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