大连长兴岛海域疏浚区GF-1 WFV影像悬浮物遥感反演研究  

Retrieval of Suspended Matters from GF-1 WFV Imagery in the Dredged Area of Changxing Island,Dalian

作　　者：王林[1] 陈艳拢[1] 袁仲杰[1] 赵建华[1] 孟庆辉[1] 赵素芳[1] 王祥[1] 王新新[1] WANG Lin;CHEN Yan-long;YUAN Zhong-jie;ZHAO Jian-hua;MENG Qing-hui;ZHAO Su-fang;WANG Xiang;WANG Xin-xin(National Marine Environmental Monitoring Center ,Dalian 116023,Liaoning Province,China)

机构地区：[1]国家海洋环境监测中心,辽宁大连116023

出　　处：《海洋技术学报》2019年第1期6-11,共6页Journal of Ocean Technology

基　　金：国家重点研发专项资助项目(2018YFC1407605);国家海洋公益性行业科研专项经费资助项目(201305003);国家自然科学基金资助项目(41506197)

摘　　要：利用2017年8-9月期间大连长兴岛海域实测遥感反射率、悬浮物浓度及GF-1 WFV数据,研究了该区域悬浮物浓度的遥感反演算法,发现遥感反射率与悬浮物浓度的散点图存在两种不同的变化趋势,将2008-2015年期间辽东湾内其它海域的数据与长兴岛海域数据进行叠加后,可初步推断产生两种变化趋势的主要原因在于疏浚区与非疏浚区悬浮物的粒径大小不同,导致其光学特性和反演算法也存在差异。将两种算法分别应用于2017年9月20日辽东湾及长兴岛近岸海域的GF-1 WFV4影像,发现采用非疏浚区算法反演长兴岛海域悬浮物浓度时,出现明显的低估现象,而疏浚区算法则能较好地反映出疏浚施工过程中悬浮物的分布规律,具有较好的工程应用价值。Based on the in-situ measured remote sensing reflectance(Rrs), the suspended matter concentration(SM) and GF-1 WFV imagery in Dalian Changxing Island sea during August to September in 2017, this paper studies the remote sensing retrieval model of suspended matters. The results indicate that there are two different trends in scatter plots of Rrsand SM. After superimposing the data of other sea areas in the Liaodong Bay during the period of 2008-2015 and the data of Changxing Island, it can be preliminarily concluded that the main reasons for the two trends are particle size difference in dredged and non-dredged areas, resulting in differences in optical properties and inversion algorithms. The two algorithms are applied to the GF-1 WFV4 image of the Liaodong Bay and Changxing Island coastal sea on September 20, 2017, respectively. The inversion results show that there is a significant underestimation in the Changxing Island coastal sea by the non-dredged area algorithm.However, the dredged area algorithm can better reflect the distribution of suspended matter during dredging construction, and has good practical engineering value.

关 键 词：GF-1 WFV影像 悬浮物浓度 大连长兴岛海域 疏浚区 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置] P76[自动化与计算机技术—控制科学与工程]