ABSTRACT

Method for recovering the single instantaneous images of underwater objects distorted by surface waves is presented. This method consists of a combination of two independent parts. In the first part, the algorithm for the determination of an instantaneous relief of waved sea surface from sunglints characteristics has been developed. The instantaneous relief is presented as a sum of harmonics with unknown amplitudes, wavenumbers and phases. To find those unknowns, a system of nonlinear equations that includes the parameters of sunglints, such as the coordinates of glints and their sizes, was derived. The number of unknowns depends on a number of harmonics in a sum, approximating the instantaneous surface relief. In the second part, the algorithm for recovering of the instantaneous image of an underwater object distorted by surface waves is developed. The correctness of the method is tested by a natural experiment.

摘要

提出了一种恢复表面波畸变的水下物体单次瞬时图像的方法。此方法由两个独立部分的组合组成。在第一部分中，已经开发了用于根据日照特征确定瞬时海浪浮雕的算法。瞬时起伏表示为振幅，波数和相位未知的谐波之和。为了找到这些未知数，派生了一个非线性方程组，其中包括阳光闪烁体的参数，例如闪光的坐标及其大小。未知数取决于总和中的谐波次数，近似于瞬时表面起伏。在第二部分中 提出了一种恢复被表面波扭曲的水下物体瞬时图像的算法。该方法的正确性通过自然实验进行测试。