Infrared absorption band atmospheric spectral transmittance measurement method
By adding an atmospheric absorption band filter to the spectrometer, the problem of calculating atmospheric transmittance in the infrared absorption band was solved, and the quantitative sensing capability of the sensor was improved.
CN115931789BActive Publication Date: 2026-04-14BEIJING INST OF ENVIRONMENTAL FEATURES +1
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Patent Information
- Application Number
- CN202211515206.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-11-29
- Publication Date
- 2026-04-14
- Estimated Expiration
- 2042-11-29
AI Technical Summary
Technical Problem
Existing technologies make it difficult to accurately measure atmospheric transmittance in the infrared absorption band, affecting the accuracy of space-based downward-looking detection.
Method used
Atmospheric transmittance is obtained by using a spectrometer equipped with an atmospheric absorption band filter, through spectral data acquisition, defect removal, quantitative inversion, and calculation.
Benefits of technology
It enables quantitative sensing of atmospheric transmittance in the infrared absorption band, thereby enhancing the sensor's quantitative sensing capability.
✦ Generated by Eureka AI based on patent content.
Abstract
The present application relates to a kind of infrared absorption waveband atmospheric spectral transmittance measurement method, it is related to detection field, including the following steps, selecting the spectrometer capable of covering absorption waveband, and installing atmospheric absorption band filter on spectrometer;According to the minimum, maximum measurement value of spectrometer parameter selection corresponding attenuator;Spectrometer is directly aimed at solar spectrum data acquisition, reads the background average corresponding digital value measured by spectrometer;The bad point of calculated spectral data is rejected;Using the spectral calibration data in laboratory, the spectral data that has been rejected is quantitatively inversed, the radiation brightness of spectrometer is calculated;The absorption waveband spectral brightness of solar reaching ground is calculated;According to the radiation brightness of calculated spectrometer and the absorption waveband spectral brightness of solar reaching ground, atmospheric spectral transmittance is directly calculated, the present application has the advantages of expanding the measurement and inversion means of shortwave infrared absorption band atmospheric transmittance spectral research.
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