在大气光学领域中,天空亮度分布有着重要的应用。简要介绍了天空亮度的测量原理,在分析同类测量仪器的基础上,提出了一种用于白天的,可见及近红外波段天空亮度测量仪器的设计,介绍了系统的组成和探测器的选择。经过定标,仪器能够得到天空亮度的绝对值,其结果反映了真实天空亮度分布的变化。该仪器弥补了传统的天空亮度测量仪器在测量波段、实时性、便携性等方面的不足,更好地满足了实际的科研需求。

In the field of atmospheric optics, distribution of sky brightness is widely used. The theory of sky brightness measurement is briefly introduced. A new design scheme of intrument for sky brightness measurement used in the day in visible and infrared band is proposed based on kindred instrument analysis, and the structure and selection of detector are introduced. After calibration, the instrument can get absolute value of sky brightness, which can show variety of sky brightness distribution. The instrument perfects traditional instrument for sky brightness in wave bands, characters of real time and portability, and meets practical demand in scientific research.