Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Scanning type atmospheric detection laser radar real-time data processing method

A real-time data processing and lidar technology, which is applied in the field of atmospheric remote sensing detection, can solve the problems of low robustness of real-time processing and great influence on accuracy, and achieve the effect of facilitating real-time data processing and robust data output.

Pending Publication Date: 2021-11-19
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] α(s ref ) is the reference distance extinction coefficient. This method is used to calculate the extinction coefficient. The selection of the extinction coefficient at the reference distance has a great impact on the accuracy, and manual intervention is often required to select the reference position. The robustness of real-time processing is low.

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
  • Scanning type atmospheric detection laser radar real-time data processing method
  • Scanning type atmospheric detection laser radar real-time data processing method
  • Scanning type atmospheric detection laser radar real-time data processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The data processing method proposed by the present invention will be described below using a typical scanning laser radar.

[0035] A typical scanning air pollution monitoring lidar installs the atmospheric detection lidar on a turntable, and the entire lidar rotates around the vertical scanning axis to realize regional atmospheric monitoring. Typical indicators include: Laser operating wavelength 1064nm, data acquisition system sampling rate 20MSps , the original data distance resolution is 7.5m, the effective detection range of lidar is 0.1-2km, the scanning range is 0-360°, and the single scanning time is 10 minutes.

[0036] For this system, adopt the system workflow of the present invention to propose algorithm as:

[0037] (1) The laser starts to work, emits pulsed laser, and starts data collection synchronously, and the scanning mechanism starts scanning according to the predetermined speed and range;

[0038] (2) The laser radar finishes scanning, and the data ...

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 discloses a scanning type atmospheric detection laser radar real-time data processing method. According to the method, a distance square correction signal is converted into a rectangular coordinate system and then is gridded, an atmospheric transmittance correction signal function is constructed, a background atmospheric extinction coefficient is fitted by using a least square method, the atmospheric transmittance is calculated by using the background atmospheric extinction coefficient obtained by fitting, and the transmittance of the signal is corrected. Then the corrected signal is normalized by using the background atmospheric extinction coefficient to obtain the atmospheric extinction coefficient two-dimensional distribution of the laser radar scanning area. The method is mainly applied to atmospheric particulate pollution monitoring laser radar for horizontal scanning work, and stable and robust atmospheric extinction coefficient two-dimensional distribution inversion can be realized.

Description

technical field [0001] The invention belongs to the field of atmospheric remote sensing detection, and in particular relates to real-time and stable data processing of a laser radar atmospheric particle pollution monitoring system. Background technique [0002] The monitoring of atmospheric particulate matter pollution in open spaces is an important means to locate the source of environmental pollution. The traditional method is to monitor atmospheric particulate matter pollution by deploying multiple in-situ detection sensors, which is costly and difficult to accurately locate the pollution source. Atmospheric lidar emits a beam of pulsed laser, and realizes the monitoring of atmospheric particle pollution at different distances by measuring atmospheric backscatter signals at different times. Combined with the horizontal scanning mechanism, it can realize remote sensing of atmospheric particle pollution in a large spatial range grid, single scanning Lidar can realize large-...

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): G01S17/95G01S7/48
CPCG01S17/95G01S7/4802Y02A90/10
Inventor 孔伟陈滔陈新乐文杰尹路舒嵘
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com