摘要
水体泥沙是进行水环境监测及研究与泥沙输移有关的侵蚀、沉积过程所带来的灾害问题的关键因素,实现悬浮泥沙遥感定量动态监测的关键在于建立合适的反演模型。采用实测光谱模拟TM/ETM+和MERIS数据,对比分析了单波段和波段比值遥感因子构建的5种常用的经验半经验模型。结果表明,以MERIS第7波段遥感反射率为遥感因子建立的对数模型最适宜鄱阳湖地区悬浮泥沙的动态监测。
The suspended sediment is closely related with water environment quality and is also the key issue in the disaster study associated with the processes of erosion, deposit and sediment transportation. A fitted inversion model plays an important role in the dynamic monitoring of suspended sediments. In this study, in situ observed remote sensing reflectance data were used to simulate the corresponding channels of TM/ETM＋ and MERIS data. A comparison is made on five empirical and semi-empirical inversion models for a single channel and the ratios among different channels. The result suggests that the logarithmic model based on reflectance of MERIS channel 7 is most suitable for suspended sediment dynamic monitoring in Poyang lake.
出处
《科技导报》
CAS
CSCD
2007年第6期19-22,共4页
Science & Technology Review
基金
国家重点基础研究发展计划(973计划)项目(2003CB415205)
国家自然科学基金项目(40676094)
教育部"长江学者和创新团队发展计划"创新团队项目(IRT0438)
关键词
灾害监测
遥感
悬浮泥沙
disaster monitoring
remote sensing
suspended sediment
