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首页> 美国政府科技报告 >The Spatial Distribution of Infrared Radiation from the Clear Sky including Sequences of Sky-Maps at Various Elevations
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The Spatial Distribution of Infrared Radiation from the Clear Sky including Sequences of Sky-Maps at Various Elevations

机译：晴空中红外辐射的空间分布，包括不同海拔天空图的序列

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Series of measurements of the spatial distribution of radi¬ation from the clear sky made from locations at approximately 1000, 6000 and l4, 000 feet elevation are reported. A theoretical relation is shown to correctly predict the observed variation in radiance with elevation angle in the 2-40 micron wavelength region, where radiation from the sky is mainly due to thermal emission by the atmosphere. In the 0. 6-2 micron region, where the radiation is mainly scattered sunlight, the spatial distri¬bution is related to that which was observed simultaneously in the visible but forward scattering is relatively more important in the near infrared and the relative intensities in the two regions are not constant.

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