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High spectral polarization atmosphere detection laser radar system and control method

A technology of laser radar and detection system, which is applied in the direction of radio wave measurement system, measurement device, climate sustainability, etc., can solve the problem of low accuracy of inversion parameters, and achieve the effect of accurate detection and avoiding interference

Inactive Publication Date: 2016-07-06
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology

Most current laser radars use interference filters to remove stray light noise, and software algorithms are used to remove interfering scattered light signals in the later stage, so as to obtain scattered light signals that need to be detected. This method is greatly affected by the external environment, and the accuracy of inversion parameters is relatively low. Low

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[0018] The present invention will now be further described with reference to the drawings and embodiments. See figure 2 , A multifunctional hyperspectral polarization laser radar system, the system includes a laser emission system 100, a photoelectric receiving / detection system 200, and a multi-channel data acquisition system 300. The laser emission system 100 consists of a pulsed laser (YAG) 1, a beam expander 2. The three-dimensional adjustment reflecting prism 3 and the Cassegrain telescope 4 are composed, a beam expander 2 is arranged between the pulse laser 1 and the three-dimensional adjustment reflecting prism 3, and the Cassegrain telescope 4 is installed under the three-dimensional adjustment reflecting prism 3;

[0019] The photoelectric receiving / detection system 200 includes a high spectral resolution grating 11 and a polarization beam splitting prism 15. The sides of the high spectral resolution grating 11 are respectively provided with a second collimating focusing...

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Abstract

The invention discloses a high spectral polarization atmosphere detection laser radar system and a control method. The high spectral polarization atmosphere detection laser radar system comprises a laser emission system, a photoelectric reception / detection system and a multichannel data collection system; the multichannel data collection system is connected to the laser emission system and the photoelectric reception / detection system; through the high spectral resolution raster and a Fabry-Perot interferometer, the high spectral polarization atmosphere detection laser radar system realizes the high spectral high resolution detection function. The high spectral polarization atmosphere detection laser radar system separates the molecule scattering component in the atmosphere echo signal from the aerosol scattering component through the Fabry-Perot interferometer, solves the difficulty, which is met by a traditional backscattering laser radar, in inversion of two unknown quantities including an aerosol scattering coefficient and an extinction coefficient performed by a radar equation. The high spectral polarization atmosphere detection laser radar system can realize the detection of multiple atmosphere parameters, has a high automation level, a simple structure design and strong expandability and can provide the application service for the atmosphere research and atmosphere protection.

Description

Technical field [0001] The invention belongs to the technical field of laser radar, and particularly relates to a multifunctional atmospheric detection laser radar system and a control method that can perform high-resolution and high-precision detection of various important atmospheric parameters. Background technique [0002] Atmospheric aerosol refers to the general term of solid particles and liquid particles suspended in the atmosphere. The aerodynamic diameter of particles is mostly between 0.001 and 100 μm. It affects the earth’s radiation balance through the direct or indirect effects of absorption and scattering. Change the planetary albedo of the atmospheric system, and aerosols as cloud condensation nuclei affect the number density of cloud droplets, thereby affecting precipitation. The optical properties of aerosols also play a very important role in atmospheric research and flux transmission research. In addition, the haze, sandstorms and other polluting weather phen...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/95G01S7/481
CPCG01S7/4816G01S17/95Y02A90/10
Inventor 何兴道李翔吴涛
Owner NANCHANG HANGKONG UNIVERSITY
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