基于遥感的北京城区水体悬浮物浓度监测  

Monitoring of concentrations of water-suspended solids by remote sensing in Beijing urban area

作　　者：王昉 王巍 史明 刘林 李丽 

机构地区：[1]北京市水利自动化研究所,北京100036 [2]二十一世纪空间技术应用股份有限公司,北京100096 [3]宇视蓝图信息技术有限公司,北京100096

出　　处：《水资源保护》2013年第4期82-86,94,共6页Water Resources Protection

基　　金：国家水体污染控制与治理科技重大专项(2009ZX07318-002)

摘　　要：利用2011年6月8日同步获取的地面实测数据与TM遥感影像,以北京城区重点水体为研究对象,探讨利用卫星遥感数据定量反演夏季城市湖泊悬浮物浓度的可行性与方法。在对遥感影像进行大气校正的基础上,通过相关性分析选择最佳反演波段,并利用经验方法建立基于TM多光谱影像的定量反演模型;通过2008—2009年4景TM影像及人工准同步测量的地面数据,对模型的精度及适用性进行分析。结果表明,模型在春季具有较好的适用性,相对误差为25.06%,接近太湖等大江大湖先进反演模型的精度。A thematic mapper （TM） remote sensing （RS） image and simultaneously acquired survey data from June 8,2011 were used to explore the approach to quantitatively retrieving the concentrations of suspended solids in urban lakes in Beijing City and to analyze the feasibility of the approach. Based on analysis of the correlations between suspended solids （SS） and measured spectra reflectivity, the most appropriate bands were selected based on the atmosphere correction of RS data. A quantitative retrieval model was developed using the TM multi-spectral image to estimate the SS concentrations. The precision and applicability of the model were analyzed using the parallel acquired field measured data and four scenes of TM data from the years 2008 to 2009. The results show that the model was applicable to the urban lakes in spring, and its relative error was 25.06% , which is close to the accuracy of the advanced model applied to big lakes such as Taihu Lake.

关 键 词：定量反演 悬浮物 TM数据 遥感 北京城区 

分 类 号：X832[环境科学与工程—环境工程]