论文部分内容阅读
在水色遥感中,光学浅水底部反射的贡献显著地改变了水体反射信号的强度与光谱分布,成为制约二类水体遥感反演精度的瓶颈问题之一。在分析光学浅水概念和内涵的基础上,从水底反射特性测量、水底二向反射特性(BRDF)与水底反射效应校正模型3个方面论述了国内外在水底反射校正研究方面的进展;指出了发展光学浅水区的提取算法、建立典型底质类型光谱数据库、构建典型底质类型BRDF模型、发展有效的水底反射校正模型与光学浅水三维辐射传输模型等几个关键问题,以期为促进二类水体水色遥感发展提供科学依据。
In aqua remote sensing, the contribution of the optical shallow bottom reflection significantly changes the intensity and spectral distribution of the reflected water body, which becomes one of the bottlenecks that restrict the accuracy of the remote sensing inversion of the second type water body. Based on the analysis of the concept and connotation of optical shallow water, the progress of research on underwater reflection correction at home and abroad is discussed from the aspects of underwater reflection characteristic measurement, underwater bottom reflective characteristic (BRDF) and underwater bottom reflection effect correction model. Optical shallow water area extraction algorithm, the establishment of a typical substrate type spectral database, the construction of a typical substrate type BRDF model, the development of effective underwater reflection correction model and optical shallow water three-dimensional radiation transfer model and several key issues, in order to promote the second-class water color Provide a scientific basis for the development of remote sensing.