微波波段大气透过率快速计算方法及装置
By constructing a high-precision microwave monochromatic atmospheric transmittance database and optimizing the vertical interpolation method, the problems of insufficient accuracy in oxygen and water vapor absorption and interpolation errors in existing methods have been solved, achieving higher-precision calculation of microwave band atmospheric transmittance and simulation of radiative transfer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINESE ACAD OF METEOROLOGICAL SCI
- Filing Date
- 2023-12-22
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for calculating atmospheric transmittance in the microwave band are not accurate enough when considering oxygen and water vapor absorption, and vertical interpolation methods affect the accuracy of radiative transmission modes, thus failing to meet the quantitative application requirements of new microwave payloads.
A representative profile set based on a global scale was constructed, and a microwave monochromatic atmospheric transmittance database was established through line-by-line integration mode. The average transmittance of the channel was determined by combining the spectral response function of the spaceborne instrument channel. Atmospheric transmittance calculation was optimized by regression coefficients and calculated predictive factors, and the vertical interpolation method for water vapor and ozone was optimized.
It improves the accuracy of atmospheric transmittance calculation, reduces errors caused by vertical interpolation, adapts to the application requirements of new microwave payloads, and enhances the accuracy of radiation transfer simulation.
Smart Images
Figure CN117909644B_ABST