摘要
本文提出了似阴天空亮度分布表达式,经验证表明,它与天空亮度实测结果吻合较好。在本文中还采用一个式子表示了各类天空亮度分布,这对于垂直面照度计算等无疑是方便的。
This paper suggests the formula about sky luminance distribution on pseudoovercast sky. After testing and verifying,it is a fact that this formula and actual measure about pseudo-overcast sky luminance distribution are nearly identical. This paper also suggests unified fornula expressing four types of sky luminance distributions(CIE clear sky,pseudo-clear sky,pseudoovercast sky and CIE orercast sky). As a result,it is of great advantage to the calculation of vertical illuminance.
基金
国家自然科学基金
关键词
天空亮度
分布
平均天空
sky luminance distribution
sky types
average sky
