动目标合成孔径雷达成象的二次相位匹配滤波法
A MATCHING FILTER METHOD OF THE QUADRATIC PHASE FOR MOVING TARGETS IMAGING IN SAR
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摘要: 本文针对合成孔径雷达运动目标回波的特点,引入多普勒调频率匹配滤波方法,解决由于运动目标成像二次相位失配而引起的方位散焦问题,提出了一种适合快速处理的离线式的匹配矩阵结构,计算机模拟得到运动目标聚焦良好的图象。Abstract: Based on the analysis of SAR radar return model, an approach using Doppler-rate matching filter is proposed. It can solve the problem of azimuth defocus because of the quadratic phase mismatch. Then a fast algorithm structure given by matching matrix is presented. The computer simulation results illustrate its availability.
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R.aney R K. IEEE Trans on AES, 1971, AES-7(3): 499-505.[2]Freeman A, Currie A. The GEC Journal of Research, 1987, 5(2): 106-115.[3]何峻湘.动目标合成孔径雷达检测与成象:[硕士论文],北京航空航天大学,1994年3月. -
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