A hyperspectral spectroscopic device and spectroscopic method for atmospheric detection

A spectroscopic device and atmospheric detection technology, which is applied in the field of laser remote sensing atmospheric detection, can solve the problems of hyperspectral spectroscopic technology difficulties, narrow molecular scattering spectrum, weak Rayleigh scattering signal, etc., and achieve the effect of suppressing meter scattering signals

Active Publication Date: 2019-05-28
XIAN UNIV OF TECH
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Problems solved by technology

However, for the near-infrared band, due to the narrow molecular scattering spectrum and the weak Rayleigh scattering signal, it is more difficult to achieve hyperspectral spectroscopy.

Method used

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  • A hyperspectral spectroscopic device and spectroscopic method for atmospheric detection
  • A hyperspectral spectroscopic device and spectroscopic method for atmospheric detection
  • A hyperspectral spectroscopic device and spectroscopic method for atmospheric detection

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Embodiment Construction

[0037] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] A hyperspectral spectroscopic device for atmospheric detection of the present invention, its structure is as follows figure 1 As shown, it includes a laser receiving and collecting part and a multi-beam reflecting part. It is characterized in that the laser receiving and collecting part includes a three-dimensional translation platform 3, and a double-hole diaphragm 4 is arranged on the three-dimensional translation platform 3. The height of the three-dimensional translation platform 3 can be adjusted. Adjust so that the center of the line of the double-hole diaphragm is positioned on the focal point of the collimating lens, the double-hole diaphragm 4 is vertically arranged, and the side of the double-hole diaphragm 4 has a first through hole 13 and a second through hole 14. The through hole 13 is provided with a first optical fiber 1...

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Abstract

The present invention discloses a hyperspectral light splitting device for atmospheric sounding. The device comprises a laser receiving and collection portion and a multi-beam reflection portion. The multi-beam reflection portion comprises a rotation platform and a collimating lens, the rotation platform is provided with a Fabry-Perot multi-beam reflection cavity, and the collimating lens is located between a dual-circular aperture and the Fabry-Perot multi-beam reflection cavity. The present invention also discloses a method for high-precision spectrum separation through adoption of the light splitting device. Multi-beam reflection light generated at the inner surfaces of a first wedge-shaped glass plate and a second wedge-shaped glass plate generates interference at the focal plane of the lens to realize the high-precision light splitting of Mie scattering signals and rayleigh scattering signals. Films of inner surface reflectivities of the first wedge-shaped glass plate and the second wedge-shaped glass plate are changed to realize the usage of any wavelengths so as to break through the limitation that laser radar with high spectral resolution of atom or molecule steam absorption pools is only suitable for few wavelengths.

Description

technical field [0001] The invention belongs to the technical field of laser remote sensing atmospheric detection, relates to a hyperspectral spectroscopic device for atmospheric detection, and also relates to a method for performing high-precision spectrum separation on atmospheric echo signals by using the spectroscopic device. Background technique [0002] Due to the intensification of environmental pollution, fine monitoring and analysis of the atmospheric environment has become increasingly important. Lidar is an effective means to detect the distribution of aerosols in a large area, with high spatial and temporal resolution, and is suitable for real-time observation. According to different detection principles, lidar mainly includes meter scattering lidar, Raman scattering lidar, polarization lidar, fluorescence lidar and high spectral resolution lidar. [0003] The widely used meter-scattering radar cannot distinguish the meter-scattering and Rayleigh scattering of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/481G01S17/95
CPCG01S7/4816G01S17/95Y02A90/10
Inventor 狄慧鸽华灯鑫华杭波张战飞张佳琪
Owner XIAN UNIV OF TECH
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