基于HJ-1卫星CCD数据的长江中游武汉河段悬浮物浓度反演  

Inversion of suspended matter concentration in Wuhan segment of the middle reaches of the Yangtze River based on HJ-1A/B CCD data

作　　者：乔晓景[1,2] 何报寅[1] 张文[1,2] 苏振华[1,2] 李元征[1,2] 

机构地区：[1]中国科学院测量与地球物理研究所环境与灾害监测评估湖北省重点实验室,武汉430077 [2]中国科学院大学,北京100049

出　　处：《华中师范大学学报（自然科学版）》2013年第5期716-719,共4页Journal of Central China Normal University：Natural Sciences

基　　金：国家自然科学基金项目(51079137)

摘　　要：环境一号(HJ-1)卫星是我国自发研制的专门用于环境和灾害监测的光学卫星.其数据获取周期短、空间分辨率高,能及时、连续、准确地监测悬浮物浓度时空变化,在内陆二类水体遥感监测方面具有良好的应用前景.该文以长江中游武汉河段为研究区,利用HJ-1卫星CCD数据第1、3波段建立了具有较高精度的悬浮物浓度反演模型,并对2008年11月14日武汉河段悬浮物浓度进行了反演,得到其空间分布图.结果表明,该模型的悬浮物浓度反演均方根误差(RMSE)为8.84mg/L,平均绝对百分比误差(MAPE)为13.6%.从空间分布来看,在武汉附近,长江干流悬浮物浓度高于支流汉江,江心洲滩附近水体悬浮物浓度偏高.The HJ-1 satellite is a native optical satellite,specializing in the environment and disaster monitoring,which has a high time and space resolution,and could be downloaded freely.So it＇s able to monitor the sediment concentration timely,continuously and accurately,and has a good application prospect for monitoring the second type inland water by remote sensing.This paper has taken the middle reaches of Yangtze River in Wuhan as the study area.A precise sediment concentration calculation model is developed,by making use of the first and third bands of CCD data in H J-1 satellite.After this,it retrieves the sediment concentration in Wuhan reach,and gets its space distribution map on November 14th,2008.The result has showed that the root mean square error（RMSE） of this model is 8.84 mg/L,and the mean absolute percentage error（MAPE） is 13.6 ％.The sediment concentration in Yangtze river is higher than Han river near Wuhan city,and the concentration is higher near the central bar than other areas.

关 键 词：HJ-1 悬浮物 遥感反演 长江中游武汉河段 

分 类 号：X524[环境科学与工程—环境工程]