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| GB/T 20148-2006 Spatial distribution of daylight-CIE standard general sky (English Version) |
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Detail of GB/T 20148-2006
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Introduction of GB/T 20148-2006
本标准规定了一组从理论和实际应用上均与太阳光和天棚照明有联系的室外日光条件。 所给定的亮度分布具有下述特性： i)它们都对称于太阳子午线，并且均为太阳和天顶之间的角距离ZS的函数。 ii)它们被定义为平滑连续的函数。 iii)天空中任一点的相对亮度取决于该天空的面与太阳之间的角度x以及该天空面与天顶之间的角度Z。
Contents of GB/T 20148-2006