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

A Correlated Photon Self-calibrating Solar Spectral Irradiance Meter Pumped at 266nm

A technology related to photons and solar spectra, applied in the fields of environmental monitoring, optical remote sensing, and climate change, can solve the problem of lack of the payload of the continuous solar observation system in sub-spectrum, and achieve the effect of high calibration accuracy.

Active Publication Date: 2021-06-22
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solar reflection band includes the atmospheric transmission window, seawater transmission and plant photosynthesis bands. Carrying out continuous observation of the sun in sub-spectral bands is of special importance to the research of global climate change, radiation balance, and global primary productivity. Lack of payload for the continuous observation system of the sun in sub-spectral bands

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
  • A Correlated Photon Self-calibrating Solar Spectral Irradiance Meter Pumped at 266nm
  • A Correlated Photon Self-calibrating Solar Spectral Irradiance Meter Pumped at 266nm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] like figure 1 , 2As shown, a 266nm pumped correlative photon self-calibration solar spectral irradiance meter includes correlative photon generation optical path, solar observation optical path, shared optical path, photon counting and analog detection module, coincidence detection and signal processing module, said The relevant photon generation optical path includes a 266nm pump laser 1, a 266nm narrow-band interference filter 2, a Glan Taylor prism 3, a 1 / 2 wave plate 4, a converging lens 5 and a BBO crystal 6 arranged in sequence on the optical path, according to I The second-order nonlinear effect of similar negative uniaxial crystals and the phase-matching condition of crystal birefringence generate phase-matched related photons in the 365nm and 976nm bands. The presence of another photon; the shared optical path includes a motor-rotating off-axis parabolic reflector 7, a figure-eight-shaped stray light elimination module 10, a dichroic mirror 11, a cut-off filte...

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 266nm pumped correlative photon self-calibration solar spectrum irradiance meter. In the self-calibration mode, a new type of correlative photon self-calibration radiation calibration light source is built in, and the self-calibration optical path and the solar observation optical path are integrated. Design, obtain the absolute spectral photon number rate of the relevant photon light source, and realize the absolute spectral power responsivity calibration of the solar observation light path analog detector; in the solar observation mode, the solar absolute spectral irradiance in the 365nm~976nm band range Measurement, correct the observation results of the solar observation channel through the calibration coefficient obtained from the self-calibration mode. The present invention starts from the basic principle of calibrating the quantum efficiency of a single photon detector by the correlation photon method, and realizes the high-precision observation of the solar spectrum irradiance in the visible light to near-infrared band through the transmission of two different radiation levels and dynamic ranges, and solves the problem of solar radiation. The scientific problem of traceability of the value of observation instruments on space platforms.

Description

technical field [0001] The invention relates to the technical fields of climate change, environmental monitoring and optical remote sensing, in particular to a 266nm pumped correlated photon self-calibrating solar spectrum irradiance meter. Background technique [0002] Long-term, stable and multi-task satellite observations are the main source of scientific data to reveal the direction and extent of global climate and environmental evolution. The research results of space remote sensing and numerical models in the past 30 years show that the absolute radiation measurement of the solar reflection spectrum reaches and maintains an uncertainty of 0.05% - 1%, which is the basic requirement for confirming the long-term period and trend of climate parameters. Facing the technical challenge of ultra-high-precision radiation measurement, the internationally recognized technical approach is to establish a space platform radiation reference, and realize the unified traceability of bu...

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): G01J3/28G01J3/02
CPCG01J3/0205G01J3/28Y02A90/10
Inventor 李健军高连芬翟文超夏茂鹏袁银麟胡友勃丁蕾戚涛郑小兵
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - 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