Research on retrieving wave height from radar shadow images based on wind angle feature

In this paper, the method to retrieve significant wave height from marine radar image based on the shadow image is investigated. Currently, the method to obtain wave height is based on the mean square wave steepness of the entire radar image. However, the retrieved wave height in shadow areas is always overestimated, since the radar image in different wind angle usually has different echo intensity. To solve this problem, the method to retrieve wave height based on the wind angle feature is proposed. The real radar images are used to certify the effectiveness of the novel method. The experimental results show that the novel method shows better performance in estimation wave height compared with the existing method.