基于虚拟潜望镜技术的成像探测机理,分析了海面斜率变化和白冠对菲涅耳窗口图像的影响,提出了基于菲涅耳窗口图像破碎环带宽度和白冠像素群出现概率的海况等级解算模型。利用该模型,可通过对菲涅尔窗口图像的数字图像处理完成海况的解算,具有被动、自动等特点。该方法可用于水下载运平台对海况的光电成像隐蔽测量,为虚拟潜望镜技术的应用拓展提供支撑。

Based on the image detecting mechanism of virtual periscope technique, the sea surface slope variety and the whitecap effect to the Snells window are analyzed. The sea state level solution model based on the Snells window image broken ring width and the probability of whitecap pixel group is proposed. By using this model, the sea state is analyzed by the digital image processing technique through the Snells window. The method has the advantage of passive and automatic, and it can be used to measure the sea state secretly under the water. It also can support the improvement of the virtual periscope technology.