一种改进的SAR自动聚焦算法
AN ADVANCED AUTOFOCUS ALGORITHM FOR SAR
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摘要: 自动聚焦是高分辨率合成孔径雷达(SAR)中的一项重要技术.如果进行实时成象,就要求自动聚焦算法有很高的计算效率.移位相关法(Shift-and-Correlate SAC)就是这样一种算法.它最先是由Jorgen在1991年提出的,本文深入分析了这种算法,并对它进行了改进.Abstract: Autofocus is an important technique in high resolution Synthetic Aperture Radar(SAR). When autofocus is needed by real-time SAR imaging processing, it must be very computationally effective. Shift and correlate algorithm is such an algorithm. It was first presented by Jorgen, (1991). In this paper, we analyze its essence and make some advance on it.
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