摘要
以鄱阳湖为研究区域,在分析实测悬浮泥沙浓度和水体光谱数据的基础上,针对HJ卫星CCD传感器数据分析了几种悬浮泥沙浓度反演经验模型的有效性。实测数据结果表明,应用HJ卫星CCD传感器第三波段建立的对数反演模型具有较高精度,悬浮泥沙浓度反演平均相对误差为12%。
The HJ CCD image has high spatial resolution,which provide a new data source for the estimation of suspended sediment concentration.The Poyang Lake is selected as the study site.A single-band logarithm inversion model is proposed to retrieval regional suspended sediment concentration from HJ CCD band 3 reflectance.Firstly,CCD data is simulated by the simultaneous spectral observation data to calculate equivalent reflectance of water.Then,sensitive bands of CCD images are determined for the retrieval of suspended sediment concentration by analyzing the correlations between in-situ data acquired by LISST 100X and the reflectance.Results show that the proposed method is better to retrieval of suspended sediment concentration with the errors of 12%.The results suggest that the logarithmic model based on reflectance of HJ CCD channel 3 is most suitable for suspended sediment dynamic monitoring in Poyang Lake.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2010年第12期1466-1469,共4页
Geomatics and Information Science of Wuhan University
基金
国家973计划资助项目(2009CB723905)
国家863计划资助项目(2007AA12Z161
2007AA120203)
国家科技支撑计划资助项目(2007BAC23B05)
国家自然基金委创新研究群体科学基金资助项目(40721001)
国家自然科学基金资助项目(40906092)
湖北省自然科学基金资助项目(2009CDB107)
南昌大学鄱阳湖环境与资源利用教育部重点实验室开放研究基金资助项目(Z03975)
测绘遥感信息工程国家重点实验室专项科研经费资助项目
