一種改進(jìn)的SAR自動(dòng)聚焦算法
AN ADVANCED AUTOFOCUS ALGORITHM FOR SAR
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摘要: 自動(dòng)聚焦是高分辨率合成孔徑雷達(dá)(SAR)中的一項(xiàng)重要技術(shù).如果進(jìn)行實(shí)時(shí)成象,就要求自動(dòng)聚焦算法有很高的計(jì)算效率.移位相關(guān)法(Shift-and-Correlate SAC)就是這樣一種算法.它最先是由Jorgen在1991年提出的,本文深入分析了這種算法,并對(duì)它進(jìn)行了改進(jìn).
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關(guān)鍵詞:
- SAR; 自動(dòng)聚焦; 高分辨率成象; 實(shí)時(shí)成象
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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