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

High precision forward multiangle atmosphere scattering measuring method

A technology of atmospheric scattering and measurement methods, applied in the field of optics, can solve problems such as complex mechanical structure design, inconvenient installation, and the inability of photoelectric sensors to achieve electrical characteristics

Inactive Publication Date: 2006-06-28
ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI +1
View PDF0 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires the performance of the two detectors to be exactly the same, but in fact neither the photoelectric sensor itself nor the detection circuit can achieve completely equal electrical characteristics.
In addition, the four transmitters / receivers all require high-precision positioning and alignment, which complicates the design of the mechanical structure and also brings inconvenience to the installation

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
  • High precision forward multiangle atmosphere scattering measuring method
  • High precision forward multiangle atmosphere scattering measuring method
  • High precision forward multiangle atmosphere scattering measuring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Referring to the accompanying drawings, the symbols are defined as follows:

[0019] 1. Infrared light source emission system

[0020] 2. Angular scattered light receiving system

[0021] 3. Shaft

[0022] 4. Particle clusters in sampling space

[0023] 5. GaAlAs infrared light emitting diode

[0024] 6. Beam collimating lens

[0025] 7. Photodetector

[0026] 8. Light intensity monitoring feedback signal

[0027] 9. Pulse modulation controller

[0028] 10. Thermistor

[0029] 11. Auxiliary photodetectors for mirror pollution monitoring

[0030] 12. Square wave oscillation signal

[0031] 13. Converging lens

[0032] 14. Si photodiode detector

[0033] 15. Optical filter

[0034] 16. Synchronous frequency selective amplifier and switch phase sensitive detection circuit

[0035] 17. Voltage / frequency converter

[0036] 18. Calculation unit

[0037] 19. Backscatter light source for mirror pollution monitoring

[0038] 20. Measured frequency signal

[0039...

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

A high accurate measuring method of forward multiangle atmospheric scattering includes setting optical emitting system / receiving system pair, crossing emitting light axis and receiving light axis on the same position by rotating two system relatively, arriving pulse light emitted by infrared LED to particle group at the same position and scattering pulse light by particle group, receiving said scattering by LED detector in receiving system, switching LED signal into switch phase sensitive rectifying circuit to use square wave oscillation signal to control pulse signal of infrared LED and switch ¿C on of said rectifying circuit to be synchronized.

Description

technical field [0001] The invention belongs to the field of optics, in particular to a method for measuring atmospheric scattering from multiple angles. Background technique [0002] When light propagates in the atmosphere, it is attenuated by the scattering of air molecules, suspended particles such as clouds, fog, raindrops, and smoke in the atmosphere. Due to the effect of scattering, a series of practical activities such as ground transportation, sea and air navigation, satellite reconnaissance and remote sensing, and astronomical observation will encounter such problems: whether the target object at a certain distance is clear through the atmosphere with human eyes or instruments, and whether it can What is the limit distance to distinguish the target object from the background, that is, the visibility problem. The measurement of atmospheric scattering is actually the measurement of the scattering extinction coefficient σs. [0003] The existing measurement methods o...

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 Applications(China)
IPC IPC(8): G01N21/49
Inventor 王缅刘文清陆亦怀王锋平连翠华陈寅张玉钧陈军方武王亚萍刘建国魏庆农谢品华张长秀
Owner ANHUI INST OF OPTICS & FINE MECHANICS - 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