中文摘要：

目前，将算术一几何均值比应用于SAR图像相干斑噪声抑制的算法还不成熟。为此，将算术一几何均值比引入增强型的Lee和Frost等滤波器中，并取代变差系数在这些滤波器中的作用，推导得出一类新的基于算术一几何均值比的自适应斑点噪声滤波器。通过对比仿真实验，验证了新滤波器的有效性和优越性。

英文摘要：

The filter algorithm for speckle based on the ratio of arithmetic to geometric mean is immature. This paper used the ratio of arithmetic to geometric mean to replace the coefficient of variation and applied into the enhanced adaptive filters. It proposed the novel class of adaptive filters, which were based on the ratio of arithmetic to geometric mean and were designed for speckle. Through simulation, verified the effectiveness and superiority of the novel class filters.