Sky hemisphere thermal infrared atmospheric downward radiation ground measurement method
A measurement method, thermal infrared technology, applied in geophysical measurement, measurement equipment, nuclear radiation exploration, etc., to achieve the effect of simple method, no complicated calculation, and convenient method
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[0035] 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:
[0036] Step 1. Ground measurement of directional thermal infrared atmospheric downlink radiance value:
[0037] 1) Select three different observation zenith angles, denoted as , , , the angle range is 0°~90°, the selected three angles should be evenly distributed within this angle range as far as possible, and the cosine values of the three angles are obtained at the same time, which are recorded as , , ;
[0038] 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 , , ;
[0039] Step 2. Parameterization of directional thermal infrared atmospheric down-going radiation values:
[0040] 1) Approximate expression of the directional thermal inf...
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