Raman scattering laser radar system for meterological and atmospheric environment observation

An atmospheric environment and lidar technology, applied in radio wave measurement systems, meteorology, measurement devices, etc., can solve problems such as the inability to observe meteorological parameters and atmospheric environment.

Inactive Publication Date: 2007-06-27
XIAN UNIV OF TECH
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Problems solved by technology

[0003] Since the laser radar for observing the atmospheric environment uses the meter scattering signal in the atmospheric echo signal, while the laser radar for meteorological observation uses the Rayleigh scattering or Raman scattering signal, so the usual meteorological observation laser radar and the atmospheric environment Observation lidars all use independent systems, and it is impossible to realize the simultaneous observation of meteorological parameters and atmospheric environment by one system

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  • Raman scattering laser radar system for meterological and atmospheric environment observation
  • Raman scattering laser radar system for meterological and atmospheric environment observation
  • Raman scattering laser radar system for meterological and atmospheric environment observation

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[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] The basis of laser remote sensing is various physical processes produced by the interaction between optical radiation and atoms, molecules and aerosol particles in the atmosphere. Among the various scattering mechanisms, Mie scattering is an elastic scattering in which the central wavelength of the scattering spectrum is the same as the wavelength of the incident laser light, and the spectral width of the scattering spectrum is similar to the spectral width of the incident laser light. Scattering caused by aerosol particles of different wavelengths; Rayleigh scattering (Rayleigh scattering) is also a kind of elastic scattering whose central wavelength is the same as the incident laser wavelength, and whose spectral width depends on atmospheric temperature changes. It is composed of molecules whose particle size is smaller than the laser...

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Abstract

The laser radar system includes transmission system, receiving system, spectrum and photoelectric detection system, and data process system. After collimation, light sent from the pulse laser is sent to atmosphere vertically. The receiving system of the laser radar receives backscattering light generated after interaction between laser and molecules, particles in atmosphere. The received atmosphere echo signal of the laser radar is sent to spectrum system to carry out spectrum. Detected by the photoelectric detection system the spectrum is sent to the data process system to carry out analysis and process. Based on preloaded program, the invention obtains temperature value of atmosphere, density of vapor, optical character parameters of atmospheric aerosol, and depolarization ratio of backscattering light of not spheroidal particle.

Description

technical field [0001] The invention belongs to the technical field of meteorological and environmental monitoring, and relates to a remote sensing detection tool for meteorological and environmental monitoring, in particular to a Raman scattering laser radar system for meteorological and environmental observation. Background technique [0002] In the field of atmospheric environment research, atmospheric temperature, water vapor density and atmospheric composition are important parameters for atmospheric research, such as: atmospheric temperature, water vapor density or relative humidity, and atmospheric aerosol extinction coefficient and scattering coefficient, aerosol optics Thickness and atmospheric visibility, depolarization ratio of backscattered light by non-spherical particles, etc. Among the existing remote sensing detection tools for obtaining the above parameters, the most effective is lidar, which has been widely used in research fields such as laser atmospheric ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/95G01W1/00G01W1/02
CPCY02A90/10
Inventor 华灯鑫刘君
Owner XIAN UNIV OF TECH
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