基于SCFT處理算法的機載SAR運動補償
Airborne SAR Motion Compensation Based on SCFT Processing Algorithm
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摘要: 該文較為詳細地分析了高分辨率機載SAR數(shù)據(jù)處理中,有關目標距離單元徙動(RCM)校正和平臺運動偏差的精確補償問題。將平臺運動偏差分解為空不變和空變分量,利用機載SAR系統(tǒng)傳遞函數(shù)以及SCFT算法,提出了目標RCM校正與平臺MOCO合并處理的方法。仿真結果驗證了方法的正確性。Abstract: This paper detailedly analyzes precise Range Cell Migration（RCM） correction of the targets and motion error compensation of platforrn in high resolution airborne SAR data processing. The motion error of platforrn is divided into space-invariant component and space-variant component. Then the paper proposes an approach of combining RCM correction and platform MOCO using transfer function of airborne SAR system and Scaled Fourier Transform algorithm. The data simulation results verify the validity of the new method.
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Barber B C. Theory of digital imaging from orbital synthetic aperture radar[J].International Journal of Remote Sensing.1985,6(6):1009-[2]Franceschetti G, Lanari R, Pascazio V, Schirinzi G WASAR: A wide-angle SAR processor. IEE Proc.-F, 1992, 139(2): 107- 114.[3]Franceschetti G, Lanari R, Marzouk E S. A new two-dimensional squint mode SAR processor[J].IEEE Trans. on Aerospace Electron.Syst.1996, 32(2):854-[4]Raney R K, Runge H, Mamler R, Cumming I A, Wong E H.Precision SAR processing using chirp scaling[J].IEEE Trans. on Geoscience and Remote Sensing.1994, 32(4):786-[5]Lanari R. A new method for the compensation of the SAR range cell migration based on the chirp Z-transform[J].IEEE Trans. on Geoscience and Remote Sensing.1995, 33(5):1296-[6]Kirk J. Motion compensation for synthetic aperture radar[J].IEEE Trans. on Aerospace Electron. Syst.1975, 11(3):338-[7]張澄波.綜合孔徑雷達原理、系統(tǒng)分析與應用.北京:科學出版社,1989:301-302.[8]Fornaro G. Trajectory deviations in airborne SAR: Analysis and compensation[J].IEEE Trans. on Aerospace and Electron. Syst.1999, 35(3):997-[9]Lanari R, Fornaro G. A short discussion on the exact compensation of the SAR range-dependent range cell migration effect[J].IEEE Trans. on Geoscience and Remote Sensing.1997,35(6):1446- -
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