图像融合技术在海阳核电工程建设区域表层悬沙浓度遥感反演中的应用  

An application of time-space fusion technology on the retrieval of surface suspend sediment using remote sensing imagery in Haiyang

作　　者：梁钰 邓海 严立文[1,2] 王强 张泽华[1,2] 王云鹤 毕海波[1,2] 黄海军 LIANG Yu;DENG Hai;YAN Liwen;WANG Qiang;ZHANG Zehua;WANG Yunhe;BI Haibo;HUANG Haijun(CAS Key Laboratoryof Experimental Marine Geology and Environment,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;University of Chinese Academy of Science,Beijing 101400,China;Shandong Nuclear Power Co.,Ltd.)

机构地区：[1]中国科学院海洋研究所,山东青岛266071 [2]中国科学院大学,北京101400 [3]山东核电有限公司,山东海阳265116

出　　处：《海洋湖沼通报》2020年第3期61-69,共9页Transactions of Oceanology and Limnology

基　　金：中国科学院海洋地质与环境重点实验室开放基金项目(MGE2018KG09)资助。

摘　　要：本研究分别采用根据高时间分辨率的GOCI(Geostationary Ocean Imager)数据和高空间分辨率的OLI影像反演得到的悬浮泥沙浓度产品,利用STARFM(Spatial and Temporal Adaptive Reflectance Fusion Model)融合算法,生成高时空分辨率的悬浮泥沙浓度产品,融合后的数据兼具OLI影像的高空间分辨率和GOCI影像的高时间分辨率。与实测数据相比, GOCI原始数据反演的相对误差为56%,融合图像的反演相对误差降低至36%。融合影像可用于探讨研究区从高潮到低潮时期表层悬浮泥沙完整变化,便于分析海阳核电工程建设区域的悬浮泥沙分布受潮流变化的影响,进而了解核电工程建设通过影响悬沙分布对周围环境产生的影响。This study utilizes the GOCI(Geostationary Ocean Imager)image which presents a high temporal resolution,and OLI(Operational Land Imager)image which shows a high spatial resolution to retrieve surface suspend sediment(SSS)in areas around Haiyang.The STARFM algorithm is used to fuse the two SSS products.The merged product is characterized with a high time and space resolution and an improved accuracy(64%)compared to any single product(44%for OLI data,for example).The merged dataset can fully capture the variations of the SSS during a complete tide cycle on a daily basis.This advantage will help us to assess the SSS changes influenced by tides and allow us to analyze the long-term impacts to environment due to the launch of the Haiyang nuclear power station.

关 键 词：遥感 悬浮泥沙 GOCI OLI 图像融合 

分 类 号：P7[天文地球—海洋科学]