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

An inversion method of aerosol extinction coefficient based on UAV atmospheric lidar

A technology of laser radar and extinction coefficient, which is applied in radio wave measurement system, climate sustainability, re-radiation of electromagnetic waves, etc., can solve problems such as inaccurate parameter values ​​and inversion errors

Active Publication Date: 2022-07-15
OCEAN UNIV OF CHINA
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Fernald method is commonly used to invert the aerosol extinction coefficient of m-scattering lidar. This detection method needs to set the ratio of atmospheric aerosol lidar. The change of the set parameters will lead to inaccurate values, which will lead to large inversion errors

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
  • An inversion method of aerosol extinction coefficient based on UAV atmospheric lidar
  • An inversion method of aerosol extinction coefficient based on UAV atmospheric lidar
  • An inversion method of aerosol extinction coefficient based on UAV atmospheric lidar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The purpose of the present invention is to provide an aerosol extinction coefficient inversion method based on UAV atmospheric lidar, so as to solve the technical problems in the related fields.

[0013] The detection principle of the aerosol extinction coefficient inversion method based on the UAV atmospheric laser radar of the present invention figure 1 shown. The atmospheric lidar transmitting unit (2) includes: a control unit, a pulsed laser and a laser transmitting system, and the atmospheric lidar receiving unit (3) includes: a laser receiving system, a photoelectric detection and data acquisition system, and a data processing system. is the sum of the rising heights of n segments, the atmospheric lidar is mounted on the UAV (1), and the diffuse reflector (4) is placed at the ground target position. After the UAV (1) lifts up to a fixed height, the atmospheric lidar transmits the unit (2) Aim downward at the diffuse reflector (4) at the target position; using the...

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 aerosol extinction coefficient inversion method based on UAV atmospheric lidar includes the following steps: Step 1, place a diffuse reflector at the ground target position, and then align the laser emission system with the diffuse reflector after the UAV atmospheric lidar lifts off to a fixed height , emit laser pulses perpendicular to the diffuse reflector; in step 2, the laser receiving system receives the backscattered signal, the photoelectric detection and data acquisition system converts and collects the signal, and then the data processing system calculates the UAV atmospheric lidar to diffuse Atmospheric optical parameters between the reflectors; step 3, the UAV atmospheric lidar rises to a fixed height n times, and repeats step 2 n times to obtain the atmospheric transmittance and optical thickness of the corresponding height, and then obtain the situation of the aerosol extinction coefficient Step 4: During the descending process, the UAV atmospheric lidar can hover at a fixed height n times, and repeat step two n times; it is equivalent to repeating the measurement during the ascent process, and the accuracy of the result can be improved by increasing the number of measurements.

Description

technical field [0001] The invention relates to an aerosol extinction coefficient inversion method based on an unmanned aerial vehicle atmospheric laser radar, and more particularly belongs to a method for inverting the aerosol extinction coefficient by using an unmanned aerial vehicle and an atmospheric laser radar. Background technique [0002] Atmospheric Lidar (Atmospheric Lidar) is an active optical remote sensing detection technology, which is used to detect the spatiotemporal distribution of aerosol extinction coefficient, backscattering coefficient, depolarization ratio and particle size characteristics, atmospheric temperature and humidity, and atmospheric gas concentration. These atmospheric parameters are of great significance to atmospheric chemistry, atmospheric radiation, atmospheric pollution monitoring, weather forecasting, and climate model research. The Fernald method is commonly used in the meter scattering lidar to retrieve the aerosol extinction coeffici...

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
Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/95G01S7/48
CPCG01S17/95G01S7/4802Y02A90/10
Inventor 宋小全王晓磊刘金涛张凯临吴松华
Owner OCEAN UNIV OF CHINA
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