摘要
以数字高程模型(DEM)为基本信息源,提取数字坡度和坡向信息,利用起伏地形下天文辐射分布式模型计算了武夷山地区各月的天文辐射空间分布。文中采用了该模型中的光线追踪法和分段积分来计算地形遮蔽信息,并以多层面复合分析方法对天文辐射量做出了空间可视化表达。
High accuracy of digital elevation models (DEM) data is used as basic information source to overlay digital slope and digital aspect models. Based on a distributed model for calculating monthly astronomical solar radiation of with a resolution of 90 m × 90 m SRTM (Shuttle Radar Topography Mission) DEM for the rugged topography of the Wuyishan mountainous area is calculated. This paper uses ray-tracing method and integral by subparagraph to calculate the conditions of terrain shading information, and through an integral way to make a visualization of astronomical solar radiation (ASR).
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2009年第14期138-141,共4页
Journal of Wuhan University of Technology
基金
国际科技合作项目(2005DFA20420)
关键词
数字高程模型
天文辐射
山地
空间分布
DEM
astronomical solar radiation
mountainous areas
spatial distribution