论文标题
二维结构功能以表征来自Sentinel-1 SAR图像的海洋大气边界层中对流卷
Two-dimensional structure functions to characterize convective rolls in the marine atmospheric boundary layer from Sentinel-1 SAR images
论文作者
论文摘要
我们研究了海洋的合成孔径雷达图像中海洋大气边界层中对流卷的形状。我们提出了具有结构函数的多尺度分析，该分析允许轻松概括分析高阶统计数据，从而很好地描述卷的形状。两个主要结果是：1）二阶结构函数表征滚动的大小和方向，就像相关性或功率谱一样，2）可以用偏度和平坦度来研究高阶统计数据，这分别表征了卷的不对称性和间歇性。据我们所知，这是首次从海面的雷达图像中显示卷的不对称性和间歇性。
We study the shape of convective rolls in the Marine Atmospheric Boundary Layer from Synthetic Aperture Radar images of the ocean. We propose a multiscale analysis with structure functions which allow an easy generalization to analyse high-order statistics and so to finely describe the shape of the rolls. The two main results are : 1) second order structure function characterizes the size and direction of rolls just like correlation or power spectrum do, 2) high order statistics can be studied with skewness and Flatness which characterize the asymmetry and intermittency of rolls respectively. From the best of our knowledge, this is the first time that the asymmetry and intermittency of rolls is shown from radar images of the ocean surface.
