反射特性在沙地参数遥感反演研究中的应用

The application of the reflectance in inverting the property of sandy land basing on remote sensing

以不同粒径的沙地表面为研究目标,测量了它们的反射信息,分析了粒径大小对沙地表面反射特性的影响,并基于现有的两种反射模型进行了验证.结果表明,粒径大小不仅可以利用反射信息直接进行反演,同时还可以通过地学统计方法来建立反射信息与粒径之间的关系;除了直接测量之外双向反射模型能够准确地计算出不同粒径沙地表面的反射信息,从而为遥感技术在沙漠监测上的应用提供了依据.

Due to remote sensing technology can utilize the optical remote sensing on inverting the soil surface features. This paper briefly reviews the role of remote sensing technology in scientific research of the soil sciences ,it mainly targeted at the monitor of soil surface and analyzed the ability of remote sensing in inversion of the parameters of soil surface features;furthermore, studied the importance of the researching on sand reflection characteristics of remote sensing monitoring, this paper also targeted the sand surfaces with different particle sizes, measured the reflectance and analyzed the influences of particle sizes on the reflection characteristics of sand surface;in the paper we used two existing models to verify the results and discovered that the reflectance of sand surface with different particles sizes can be inverted directly, meanwhile geological statistics method can be used to establish the relations between sand reflection characteristics and particles sizes, except to measure directly, the bidirectional reflectance model can also compute the reflectance of sand surface with different particles sizes precisely,which has provided a basis of using remote sensing to monitor the desert.