线性频率分集阵列SAR增强后向投影算法

doi:10.3969/j.issn.1001-2400.2017.04.021

Abstract

Abstract:

Based on the signal model of multiple carrier frequency (MCF) for linear frequency diversity array synthetic aperture radar (LFDA-SAR), we propose an enhanced back-projection (EBP) algorithm. Compensation for the quadratic phase error in echoes is executed and the spatial-variant range drifting amount and phase of the target are amended during the process of back-projection. The proposed algorithm can effectively rectify the image blurring and geometric distortion problem in classical back-projection imaging results, realize a high precision imaging of targets with an arbitrary imaging geometry and distinguish adjacent strong and weak targets. All results verify the effectiveness of the proposed algorithm.

Key words: frequency diversity array, synthetic aperture radar, back-projection

RAN Da;YIN Canbin;JIA Xin. Linear frequency diversity array synthetic aperture radar imaging based on enhanced back-projection algorithm[J].Journal of Xidian University, 2017, 44(4): 118-124.

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Linear frequency diversity array synthetic aperture radar imaging based on enhanced back-projection algorithm

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