研究了一种适用于合成孔径雷达的自聚焦算法，称自适应峰度最优自聚焦算法（AKOAA）。该算法能有效解决对比度最优算法的局部极值问题，且具有原理简单、收敛快、计算量小、适应性强等特点。该文着重研究了AKOAA的原理及实现方法，最后通过对实际的L_SAR数据成像得到了较为理想的图像，这既证明了该算法的有效性，也说明了该算法具有重要实际应用价值。

To focus a synthetic-aperture radar image which suffers from phase errors,an autofocus algorithm:Adaptive Kurtosis Optimal Autofocus A1gorithm(AKOAA),is proposed.This algorithm is based on the optimization of the kurtosis function,which represents a measure of the focused degree of the image.The main steps of the AKOAA are described.The AKOAA has many advantages.Experient shows that this algorithm is very efficient.

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国家微波成像技术国防重点实验室基金资助项目