Rotary Raman laser radar system based on grating technology light splitting structure

A technology of rotating Raman and laser radar, which is applied in the coupling of optical waveguide, radio wave measurement system, re-radiation of electromagnetic waves, etc., can solve the problems of unfavorable weight, complex adjustment, large volume, etc., and achieve low adjustment complexity, Reduced freedom of adjustment, small size effects

Inactive Publication Date: 2012-01-18
XIAN UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a rotating Raman laser radar system based on the light-splitting structure of grating technology, so as to solve the complex adjustment...

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  • Rotary Raman laser radar system based on grating technology light splitting structure
  • Rotary Raman laser radar system based on grating technology light splitting structure
  • Rotary Raman laser radar system based on grating technology light splitting structure

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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 present invention draws lessons from the existing double-diffraction grating spectroscopic technology, and combines the advantages of narrow spectroscopic bandwidth and small fiber core diameter of the fiber Bragg grating 13 to construct a novel spectroscopic system with relatively simple adjustment for rotating the Raman laser radar system, and to rotate The Raman lidar system can separate the spectral space of backscattered light, suppress the strong light signal of Mi-Rayleigh scattering and filter out the background noise of the sun during the day, and has the detection ability of rotating the Raman spectrum, which can further invert the atmosphere Absolute temperature values, remote sensing detection of various parameters of the atmosphere.

[0022] Such as figure 1 As shown, the present invention provides a rotating Raman la...

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Abstract

The invention relates to a rotary Raman laser radar system based on a grating technology light splitting structure, which comprises a laser emitting system, a receiving system, a light splitting system, a photoelectric detection system and an information processing system, wherein the light splitting system comprises a positive lens, a blaze grating, an optical fiber array, optical fiber couplers and an optical fiber Bragg grating, the optical fiber array and the blaze grating are respectively positioned at the front side and the rear side of the positive lens, a plurality of optical fibers are connected to the optical fiber array, the optical fiber coupler is arranged on each optical fiber and provided with three ports which are respectively PA, PB and PC, and the port PB is connected with the optical fiber Bragg grating. According to the invention, regulation freedom of the rotary Raman laser radar system is reduced; and the rotary Raman laser radar system has the advantages of compact structure, small volume and light weight, and has a certain daytime remote sensing detecting capacity so as to be suitable for vehicle-mounted, air-mounted and satellite-mounted application.

Description

technical field [0001] The invention belongs to the technical field of meteorological and environmental observation, and relates to a rotating Raman laser radar system for remote sensing atmospheric parameters, mainly relating to a rotating Raman laser radar system with low adjustment complexity combined with diffraction grating and fiber grating spectroscopic technology, Atmospheric parameters such as atmospheric temperature and aerosol optical properties can be remotely sensed. Background technique [0002] As an active remote sensing technology, lidar has been widely used in research fields such as laser atmospheric transmission, global climate prediction, aerosol radiation effects and atmospheric environment. The physical basis of laser remote sensing technology is the physical processes such as Meter scattering, Rayleigh scattering, and Raman scattering produced by the interaction between laser radiation and atoms, molecules, and aerosol particles in the atmosphere. Th...

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Application Information

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IPC IPC(8): G01S17/95G01S7/481G02B6/34
CPCY02A90/10
Inventor 华灯鑫李仕春宋跃辉
Owner XIAN UNIV OF TECH
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