Method and system for observing atmospheric transmittance in real time

A technology of atmospheric transmittance and real-time observation, applied in transmittance measurement, radio wave measurement system, measuring device, etc.

Inactive Publication Date: 2014-04-02
INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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However, this model is difficult to be used in real-t...

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  • Method and system for observing atmospheric transmittance in real time
  • Method and system for observing atmospheric transmittance in real time
  • Method and system for observing atmospheric transmittance in real time

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[0025] The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0026] A method for real-time observation of atmospheric transmittance of the present invention, specifically:

[0027] 1) By using passive remote sensing solar radiometers, active remote sensing lidars, automatic weather transmitters and visibility meters, real-time measurement of atmospheric aerosol data and meteorological conditions in the region;

[0028] 2) Match the measured data and use the nearest neighbor time matching rule within a dynamic time period for multi-data collaborative use;...

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Abstract

The invention discloses a method and a system for observing atmospheric transmittance in real time. Specifically, the method comprises the following steps: 1) measuring the atmospheric aerosol data and the meteorological condition of an area according to a passively remote sensing actinometer, an actively remote sensing laser radar, an automatic weather transmitter and a visibility meter; 2) matching the measured data and conducting multi-data collaboration use according to a nearest neighbor time matching principle within a dynamic time period; and 3) creating an atmospheric subdivision profile or the whole atmosphere content information on the basis of the observation data, and calculating in real time the spectral transmittance and the average spectrum transmittance between the observation location and the target location. The more accurate observation result is coupled to a MODTRAN radiation transfer model to calculate in real time the atmospheric transmittance. According to the method and the system provided by the invention, the target of measuring and calculating in real time the atmospheric transmittance is fulfilled, the observation data are processed in real time, and the transmittance spectrum between any positions of the atmosphere is rapidly calculated.

Description

technical field [0001] The invention relates to a method and system for real-time observation of atmospheric transmittance. Background technique [0002] Atmospheric transmittance (or atmospheric transmittance) describes the ratio between the electromagnetic radiation passing through a certain thickness of the atmospheric medium layer and the incident electromagnetic radiation. Atmospheric transmittance is an important parameter reflecting the optical characteristics of the atmosphere, and it has important reference value in the application of atmospheric radiation, remote sensing of earth resources, environmental monitoring, space target monitoring and other fields. In most practical applications, the real-time atmospheric transmittance cannot be measured. People usually rely on atmospheric radiation transfer software to calculate the atmospheric transmittance when the atmospheric absorbing gas content, aerosol optical properties and spatial distribution characteristics are...

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Application Information

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IPC IPC(8): G01N21/61G01S17/95
CPCY02A90/10
Inventor 许华李正强李东辉吕阳侯伟真李莉张莹
Owner INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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