A Ground Measurement Method for Thermal Infrared Atmospheric Downward Radiation of Sky Hemisphere
A measurement method, thermal infrared technology, applied in geophysical measurement, measurement devices, nuclear radiation exploration, etc., to achieve the effect of eliminating complex calculations, saving material and financial resources, and convenient methods
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[0030] Such as figure 1 As shown, a ground measurement method for thermal infrared atmospheric downlink radiation in the sky hemisphere, the specific implementation steps are as follows:
[0031] Step 1. Ground measurement of directional thermal infrared atmospheric downlink radiance value:
[0032] 1) Select three different observation angles, denoted as θ 1 , θ 2 , θ 3 , the angle range is 0°~90°, the selected three angle values should be evenly distributed within this angle range as far as possible, such as 0°, 30°, 60°, and the cosine values of the three angles are obtained at the same time, which are recorded as cos(θ 1 ), cos(θ 2 ), cos(θ 3 );
[0033] 2) Use the infrared radiometer to measure the sky at three different selected angles, and the atmospheric downgoing radiation values measured in different directions are recorded as
[0034] Step 2. Parameterization of directional thermal infrared atmospheric down-going radiation values:
[0035] The remot...
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