太阳轨迹空间连续性的日照分析算法优化

针对日照分析模拟必须考虑众多真三维地形/地物的遮挡因素,传统的日照分析方法难以在现实世界的复杂地理场景中得出高效、准确分析结果的问题展开研究,基于太阳运行轨迹的空间连续性,利用数据缓存方法对遮挡图元进行预判,实现了日照分析算法的优化。应用实例表明,将该方法与空间划分方法配合使用,可以在保证运算结果正确的基础上,进一步提高日照分析的计算效率,从而实现复杂地理场景中准确、快速的日照分析计算。

Optimization of sunlight analysis algorithm based on the spatial continuity of solar orbit

It is necessary to take into account the shelter factor of numerous terrain and cultural features of three dimensions when carrying on solar analysis in the complex geographical scene of real world.However traditional solar analysis methods often have the problems of low efficiency and low accuracy when applied in it.In response to these issues,the sunlight shelter analysis algorithm is optimized by the method of data cache,which can be use to prognosis the shelter feature,based on the spatial continuity of the sun's moving orbit.Experiment shows that,by using the methods of data cache and space division cooperatively,the efficiency of the sunlight analysis algorithm can be further promoted on the basis of keeping the correctness of the computing result,which can precisely and efficiently calculate sunlight duration in complex geographical scene.