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An improved algorithm for phase-resolved sea surface reconstruction from X-band marine radar images

机译:一种基于X波段海洋雷达图像的相位分辨海面重建改进算法

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摘要

We present a modified methodology for phase-resolved surface wave reconstruction from incoherent X-band marine radar images. The method is based on the linear wave theory and uses the linear dispersion relation to extract the valuable signals associated with gravity waves. A parameter optimization of the proposed modification is performed based on simulated synthetic radar images. The quantitative comparisons in the accuracy of the standard and modified reconstruction methods are made for both simulated and real radar images. The correlation coefficient between reconstructed and true wave elevations is improved up to 0.9-0.92 for the present modified method from 0.69 to 0.74 for the standard method for the simulated sea surfaces. The wave spectra reconstructed from the real X-band radar measurements are in good agreement with those obtained from the independent point measurement by Miros RangeFinder for both unimodal and bimodal seas.
机译:我们提出了一种改进的非相干X波段海洋雷达图像相位分辨表面波重建方法。该方法基于线性波理论,利用线性色散关系提取与重力波相关的有价值的信号。基于仿真合成雷达图像对所提修改进行了参数优化。对模拟雷达图像和真实雷达图像进行了标准重建方法和改进重建方法精度的定量比较。本修正方法的重建波高程与真实波高之间的相关系数从模拟海面标准方法的0.69提高到0.9-0.92。从真实的X波段雷达测量中重建的波谱与Miros RangeFinder在单峰和双峰海域的独立点测量得到的波谱非常吻合。

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