有冰海区溢油的非线性光谱混合模型研究  

Study on nonlinear spectral mixture model of oil spill in ice-covered sea area

作　　者：卢慧敏 李颖[1] 刘丙新[1] 张立华[3,4] LU Huimin;LI Ying;LIU Bingxin;ZHANG Lihua(College of Navigation,Dalian Maritime University,Dalian 116023,China;Department of Basic Science,Dalian Naval Academy,Dalian 116018,China;Department of Military Oceanography and Hydrography&Cartography,Dalian Naval Academy,Dalian 116018,China;Key Laboratory of Hydrographic Surveying and Mapping of PLA,Dalian Naval Academy,Dalian 116018,China)

机构地区：[1]大连海事大学航海学院,辽宁大连116023 [2]海军大连舰艇学院基础部,辽宁大连116018 [3]海军大连舰艇学院军事海洋与测绘系,辽宁大连116018 [4]海军大连舰艇学院海洋测绘工程军队重点实验室,辽宁大连116018

出　　处：《海洋环境科学》2024年第1期93-99,共7页Marine Environmental Science

基　　金：国际重点研发计划项目(2020YFE0201500);大连市高层次人才团队创新支持计划项目(DJYKYKT2021-018)。

摘　　要：针对有冰海域小油滴形成冰油混合物中油含量低的特点,本文提出了能够准确反演组成物质丰度的模型。该模型在多项式与三角函数混合模型的基础上,通过添加正则项并对光谱特征进行小波变换,在避免过拟合问题的同时还能突出低能量信息。应用渤海湾光谱数据进行拟合实验,该模型能够在溢油含量百分比低至10-4数量级的情况下实现精确反演,保持不同含量溢油的相应数量级。与经典非线性模型方法比较,本文提出的混合模型在溢油丰度的对数均方根误差及溢油分布图像上具有明显优势,可为高纬度地区的溢油响应提供技术支持。To describe the nonlinear effect of oil-ice mixture with low oil concentration in ice-covered sea area,a method was proposed to accurately estimate the abundances of constituent materials.Based on the polynomial and sine model,the method added normalization terms and performed wavelet transformation to spectral signatures,to resolve over-fitting problems and highlight the low energy information.According to the experimental analyses of constructed mixtures based on the data collected in Bohai Bay,the estimated abundance is accurate for the real one as low as 10−4,and can stay in the corresponding magnitude order related to the real data.Compared to classic nonlinear models,the proposed method shows lower logarithm mean square root error and clearer oil spill distribution maps,which can be used to plan a response to oil spills in high latitude.

关 键 词：混合模型 丰度反演 冰区 溢油 

分 类 号：TP751.1[自动化与计算机技术—检测技术与自动化装置] X87[自动化与计算机技术—控制科学与工程]