SAR图像斑点噪声抑制技术的定量评估研究

Quantitative Assessment of Speckle Filters for SAR Images

合成孔径雷达SAR得到广泛的应用和研究,因此SAR斑点噪声抑制技术也受到了普遍关注。各种斑点滤波器的技术途径各不相同,对斑点噪声的抑制效果也就各不相同。文中在研究SAR图像基本特性和国内外现有的斑点滤波器的基础上,参照相关SAR图像质量指标,提出定量评估SAR图像斑点抑制技术的指标体系,给出各指标在实际应用中的测量方法。计算机仿真结果证明了指标的有效性。

Synthetic aperture radar(SAR)has experienced great application and development,and much attention has been paid to speckle. Diversified speckle reduction techniques have been proposed and suppress speckle to different level. Based on study of properties in SAR images,the existent filters and related equality indexes of SAR images,quantitative indexes for evaluation of speckle filters are proposed and practical measurements of the indexes are presented. The experimental results demonstrate the effectiveness of the proposed indexes.