袁超文,张彦敏,姜文正,王运华

• 1:中国海洋大学信息科学与工程学部
• 2:自然资源部第一海洋研究所
• 3:青岛海洋科学与技术试点国家实验室区域海洋动力学与数值模拟功能实验室

摘要(Abstract)：

本文根据相干斑噪声的时间快变特征和非海浪纹理现象的时间缓变特征，基于交叉谱提出了一种对相干斑噪声和大尺度非海浪纹理的抑制的方法，进而结合SAR图像谱和海浪谱之间的准线性映射关系，基于SAR数据对海浪参数进行了反演。在反演过程中，首先仿真分析了不同海况下准线性近似法的海浪反演能力，结果表明：风浪引起的方位向截断效应会显著影响反演精度，因此该方法在低风速时的涌浪反演精度更高。通过将基于Sentinel-1卫星2020年的波模式SAR数据的反演结果与欧洲中期天气预报中心(European Centre for Medium-Range Weather Forecasts, ECMWF)提供的再分析数据进行对比，发现高海况海浪有效波高反演结果明显偏低，而且该反演误差与风速、方位向截断波长之间存在显著相关性。为了提高有效波高的反演精度，本文进一步给出了海浪有效波高反演误差与风速、方位向截断波长之间的经验校正函数模型，结果显示，通过该模型修正后的海浪有效波高反演结果与ECMWF数据和浮标测量数据具有良好一致性。

关键词(KeyWords)： 海浪;合成孔径雷达;准线性近似法;有效波高;非海浪纹理

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41976167,52101393);; 山东省自然科学基金项目(ZR2021MD023,ZR2021QD001)资助~~

作者(Author): 袁超文,张彦敏,姜文正,王运华

DOI: 10.16441/j.cnki.hdxb.20220442

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