A multi-cavity absolute radiometer cross-calibration measurement method
A measurement method and absolute radiation technology, which is applied in the field of multi-cavity absolute radiometer cross-calibration measurement, can solve the problems of measurement errors of the main measurement cavity and compensation cavity, and achieve the effects of improving measurement accuracy, making it convenient, and avoiding errors
Active Publication Date: 2020-04-10
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
[0006] In view of the existing temperature drift in the optical observation stage and the electric calibration stage and the problem of measurement error introduced because the main measurement cavity and the compensation cavity cannot be completely consistent, the embodiment of the present invention provides a method that can well suppress the temperature drift and Cross-calibration measurement method of multi-cavity absolute radiometer with high measurement accuracy
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[0023] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0024] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily Describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate cir...
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The embodiment of the invention discloses a multi-cavity absolute radiometer cross calibration measurement method. The multi-cavity absolute radiometer cross-calibration measurement method cross-calibrates the first receiving cavity and the second receiving cavity: when one receiving cavity receives light, the other receiving cavity uses electric heating to make the thermal balance values of the two receiving cavities equal , and then exchange the working mode of the two receiving cavities, that is, the receiving cavity that originally received the light is electrically heated, and the receiving cavity that was originally electrically heated receives the light, so that the thermal balance values of the two receiving cavities are equal again, and the two stages are combined The photoelectric equivalent equation is used to eliminate the pyroelectric coefficients of the temperature sensors of the two receiving cavities, thereby obtaining a high-precision irradiance calculation formula. The multi-cavity absolute radiometer cross-calibration measurement method can well suppress temperature drift and has high measurement accuracy.
Description
technical field [0001] The invention relates to the technical field of absolute radiometer calibration, in particular to a multi-cavity absolute radiometer cross calibration measurement method. Background technique [0002] In addition to nuclear energy, geothermal energy, volcanic eruption, etc., the energy on the earth comes directly or indirectly from solar radiation. For the earth, a complex system composed of land, ocean and atmosphere, no matter what kind of atmospheric chemistry, ocean, atmospheric circulation and biological processes and their interactions exist inside, solar radiation is the most important external energy source. Small changes in solar radiation will also lead to changes in the global energy cycle, water, carbon and nitrogen cycle processes, causing huge changes in the earth's environment, climate, and meteorology. Solar radiation is the main driving force of the Earth's weather process and climate evolution. Climate change and medium- and long-ter...
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IPC IPC(8): G01J5/12G01J5/00
CPCG01J5/00G01J5/12G01J5/80
Inventor 贾瑞栋夏志伟衣小龙王凯王玉鹏叶新方伟
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI