Inversion method for transmittance of whole atmosphere

A technology of atmospheric transmittance and inversion, applied in the field of atmospheric optics, can solve the problems of less research on atmospheric transmittance

Inactive Publication Date: 2012-07-11
NO 63655 TROOPS OF THE CHINESE PEOPLES LIBERATION ARMY
View PDF3 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The domestic Anhui Institute of Optics and Fine Mechanics, the National Meteorological Administration and other units have conducted a large number of studies on the optical parameters of atmospheric aerosols using ground-based solar radiometers. The main research direction is the mea

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Inversion method for transmittance of whole atmosphere
  • Inversion method for transmittance of whole atmosphere
  • Inversion method for transmittance of whole atmosphere

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] According to Bouguer's law, the direct solar radiation E(W / m 2 )for:

[0019] E(λ)=E 0 (λ)·R·exp(-m(θ)·τ(λ))·T g (1)

[0020] where E 0 (λ) is the direct solar spectral irradiance at the last wavelength λ of the atmosphere at a distance of one astronomical unit (AU); R is the sun-earth distance correction factor at the measurement moment (R=(r m / r) 2 , r is the actual distance between the sun and the earth at the time of observation; r m is the average distance between the sun and the earth); m(θ) is the relative air mass (also known as the atmospheric mass number), θ is the solar zenith angle at the observation time; τ(λ) is the total optical thickness of the atmosphere in the vertical direction at the wavelength λ; T g In order to absorb the gas transmittance, in the actual measurement, the measurement wavelength of the general solar pyranometer is selected at the wavelength where the absorption of gas molecules can be ignored, and all T g =1.

[0021] ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Wavelengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses an inversion method for the laser transmittance of the whole atmosphere. The method comprises the following steps of: measuring an aerosol optical depth of the whole atmosphere by selecting a specific wavelength, and performing inversion to obtain the aerosol optical depth of the whole atmosphere of other wavelengths; and inverting the transmittance of the whole atmosphere. The method has the advantages that: inversion of the transmittance of the whole atmosphere in ultraviolet, visible and infrared bands is realized by using a multi-band solar radiometer and atmospheric model or local atmospheric measured data and high-resolution atmospheric absorption optical depth computation software; and the problem about measurement of the laser transmittance of the whole atmosphere in a broad spectrum is solved.

Description

technical field [0001] The invention relates to atmospheric optics, in particular to a method for inversion of the entire layer of atmospheric transmittance by using a multi-wavelength solar radiometer and high-resolution atmospheric transmittance calculation software. Background technique [0002] The solar radiometer uses the sun as the light source to measure the direct solar radiation transmitted through the entire atmosphere, and is mainly used for the detection of atmospheric aerosols. NASA of the United States established the automatic atmospheric aerosol observation network AERONET by using the CE318 solar pyranometer produced by the French CIMEL company, and deployed more than 180 ground-based solar pyranometers around the world, mainly for atmospheric aerosol radiation climate research, and also for satellites. The system remote sensing analysis results provide support and verification. The China Meteorological Administration has built a national monitoring networ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N21/59
Inventor 强希文李志朝刘晶儒吴敏常金勇李岩罗振莹
Owner NO 63655 TROOPS OF THE CHINESE PEOPLES LIBERATION ARMY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap