提出了一种SAR图像海洋内波检测与参数估计的新方法。通过对传统的Radon变换进行改进，将图像在椭圆区域内进行积分归一化，达到海洋背景下弱直线检测的目的。利用滑动窗口的思想结合椭圆域归一化Radon变换检测内波区域，通过对变换域的数据进行分析处理与计算，得到内波传播方向和内波波长参数。通过对实测SAR图像数据进行处理的结果可知，采用该方法对内波SAR图像进行处理不需要人工干预，能很好地定位内波位置，获得的内波参数与观测结果相符。

A new solution to internal wave detection and parameter estimation in SAR ocean image is presented in this paper. It improves the traditional Radon transform through normalizing the Radon coefficients in an ellipse region and thus can detect the inconspicuous lines with ocean background. Making use of the idea of glide windows we use the proposed transform to detect the internal wave region, and then we can estimate the wave direction and the wavelength simply through dealing with the Radon coefficients. The experiment on real SAR images show that the proposed method can process the SAR images automatically, it can detect the internal wave region correctly and the estimated parameter is consistent to the real observation.