分析了合成孔径雷达 (SAR)图像中舰船航迹的特性和斑点噪声模型及其局部统计特性 ,在此基础上 ,提出了一种结合小波多分辨率分析、自适应阈值选择、边缘检测算子和Radon变换进行斑点噪声抑制和航迹检测的算法。数据处理的结果表明 ,该方法较直接对SAR图像应用Radon变换更有效、准确地检测到SAR图像中的舰船航迹

The characteristics of ship wakes in SAR images are analyzed, the model of speckle noise and its local statistic characteristics are also analyzed. A ship wake detection algorithm is developed in this paper w hich combines wavelet multiresolution analysis and adaptive threshold selection and edge detector with Radon transform to suppress the speckle noise and detect the ship wakes. The results of data processing show that the proposed method is more efficient and more accurate for detecting the ship wakes in SAR images than that of applying Radon transform to SAR images directly.

TN958 TN957.51