Atmospheric component detection laser radar based on dispersion gating

A technology for detecting laser light and atmosphere, applied in color/spectral property measurement, measurement device, climate sustainability, etc., and can solve problems such as complex system structure

Pending Publication Date: 2021-01-05
UNIV OF SCI & TECH OF CHINA
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, differential absorption lidar has achieved H 2 O.CO 2 , CO, HCI, NH 3 , NO 2 , SO 2 and O 3 However, the disadvantage of differential absorption lidar is that it can only detect the composition of a single gas
[0007] Based on the wavelength-scanning lidar with hypersp...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Atmospheric component detection laser radar based on dispersion gating
  • Atmospheric component detection laser radar based on dispersion gating
  • Atmospheric component detection laser radar based on dispersion gating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0048] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0049] refer to figure 1 , figure 1A schematic structural diagram of an atmospheric component detection lidar based on dispersion gating provided by an embodiment of the present invention, the atmospheric compone...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides an atmospheric component detection laser radar based on dispersion gating. The atmospheric component detection laser radar enables femtosecond laser to be stretched into wide-pulse laser in a time domain through dispersion, a femtosecond spectrum is mapped into a broadened laser pulse through group velocity dispersion, through the time domain gating of an intensity modulator, selection of the laser with the preset wavelength is completed, and scanning of the laser wavelength is achieved by adjusting time delay of an electric driving signal of the intensity modulator. Anabsorption spectrum of a specific atmospheric component is obtained through laser wavelength scanning, so that the concentration of the atmospheric gas component is measured. The atmospheric componentdetection laser radar can accurately gate the wavelength of the emitted laser at will, the wavelength selection precision is high, and the scanning detection of various gases can be realized by adjusting the central wavelength of a filter.

Description

technical field [0001] The invention relates to the technical field of laser radar, and more specifically, relates to a laser radar for detecting atmospheric components based on dispersion gating. Background technique [0002] The detection of atmospheric composition plays an important role in climatology, meteorological research, release of biological and chemical weapons, prevention of forest fires, and prevention and control of air pollution. [0003] Among the current detection methods, single-point detection techniques include: Differential Optical Absorption Spectroscopy (DOAS for short), Non-Dispersive Infrared (NDIR for short), and cavity ring-down spectroscopy ( Cavity Ring-down Spectroscopy (CRDS for short), Incoherent Broadband Cavity-Enhanced Absorption Spectroscopy (IBBCEAS for short), Laser-induced Fluorescence (LIF for short), Ultraviolet-visible spectrophotometry (Ultraviolet –visible spectroscopy (UV-Vis for short), tunable diode laser absorption spectrosco...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01S17/88G01S17/95G01S7/481G01N21/31
CPCG01S17/88G01S17/95G01S7/4814G01N21/31G01S7/481Y02A90/10G01S7/4876
Inventor 章振上官明佳夏海云窦贤康薛向辉
Owner UNIV OF SCI & TECH OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap