基于资源三号光学影像的海洋表面状态分析  

Analysis on Sea Surface State Based on ZY-3 Optical Images

作　　者：袁策[1] 田根[1] 熊祖强[2] YUAN Ce;TIAN Gen;XIONG Zuqiang(School of Resources and Environment,Henan Polytechnic University,Jiaozuo,Henan 454003,China;School of Energy Science and Engineering,Henan Polytechnic University,Jiaozuo,Henan 454003,China)

机构地区：[1]河南理工大学资源环境学院,河南焦作454003 [2]河南理工大学能源科学与工程学院,河南焦作454003

出　　处：《遥感信息》2022年第4期114-120,共7页Remote Sensing Information

基　　金：国家自然科学基金面上项目(51274088);河南理工大学自然科学基金项目(672103/001/217);河南省创新型科技团队支持计划项目(CXTD2017088);河南省高等学校重点科研项目计划(20A440007)。

摘　　要：针对海表状态在线数据的实时获取这一海洋学亟待解决的问题,提出利用数字图像处理技术和统计学方法从资源三号光学影像中提取海浪谱的能量谱、峰度和偏度等分析海表状态。根据海浪能量谱的主方向和能量谱曲线上极值转折点数,研究海表状态的复杂度;由海浪谱的峰度和偏度的极值及它们的曲线形状,判断海表状态分布;再结合光学影像中海浪的空间特征和实验区域的海水深度,确定海况类型及成因,实现海表状态和成因的分析。实验结果显示,单、交叉、多海况的海表状态与欧洲中期预报数据中统计的有效波高、波龄等参数适应的海表状态一致,是有效的。该方法为实时监测海表状态、航运安全和海上救援等提供了基础数据和新思路。The real-time acquisition of online data of the sea surface state is a pressing question of oceanography.Using digital processing technique and statistics method,this paper presents a method of analyzing sea surface state based on ZY-3 optical images by the wave spectrum energy,kurtosis,skewness etc of the sea wave spectrum.The complex of sea wave state is gained by the main direction of sea wave spectrum energy and the numbers of turning points in their curves;the sea surface distribution is determined by the maximum values of the kurtosis and skewness of sea wave spectrum;based on the above two conclusions,combine the special characteristics of sea wave from ZY-3 images and the water depth of test areas to ascertain the type of sea wave and their causes.The test results show the effectiveness of the method proposed in this paper in analyzing the single,double,and multiple sea state by comparing the sea surface is in accord with the significant wave height and wave age from ECMWF data,which provides basic data and a new idea for real-time monitoring of sea surface status,shipping safety and maritime rescue.

关 键 词：资源三号光学影像 海表状态 海浪谱 峰度 偏度 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]