Synthesis multifunctional middle and upper atmosphere exploration laser radar

An atmospheric detection and lidar technology, applied in lasers, laser parts, electrical components, etc., can solve problems such as difficult operation, low operational reliability, and complex technology, achieve high wind field measurement accuracy, and ensure relatively consistent stability, and the effect of ensuring frequency stability

Inactive Publication Date: 2007-09-12
WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two methods have less equipment, but the technology is complex, especially the operation of system deflection is difficult, the detection direction conversion time is long, and the precise matching of high-altitude transceivers is difficult, resulting in low operational reliability.

Method used

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  • Synthesis multifunctional middle and upper atmosphere exploration laser radar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The comprehensive multi-functional middle and upper atmosphere detection lidar is composed of a laser emitting part 1, an optical receiving part 2 and a signal detecting part 3.

[0033] Laser emission part 1:

[0034] The laser emitting part 1 is composed of a first laser emitting device 10 and a second laser emitting device 11 .

[0035] The first laser emitting device 10 is composed of a first seed injection frequency-stabilized Nd:YAG laser 101, a first frequency multiplier 102, a first beam splitter 103, a second frequency multiplier 104 and a first prism 105, and in this order Arrangement; the first seed is injected into the 1064nm laser output by the frequency-stabilized Nd:YAG laser 101, the first frequency multiplier 102 produces the 532nm laser, and the 532nm laser and the remaining 1064nm laser are split by wavelength through the first beam splitter 103, and the reflected The first 532nm laser beam 231 is emitted, and the emission direction is parallel to th...

Embodiment 2

[0053] One or two or three of the three receiving telescopes in Embodiment 1 adopt combined receiving telescopes.

Embodiment 3

[0055] The atomic filter of the sodium layer fluorescent channel 303 in Embodiment 1 or Embodiment 2 adopts an interference filter or a birefringence filter.

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Abstract

This invention discloses a synthetic multifunctional middle and upper atmosphere monitoring laser radar, which is made up of laser emission (1), optical receiving (2), signal detecting (3). This radar reasonably mixes together Rayleigh scattering laser radar, natrium fluorescent light laser radar and Rayleigh monitoring wind laser radar. The invention makes hardware be of multiple utilization, implements a laser radar monitors density, temperature, fluctuation and wind field of middle and upper atmosphere all the day. This laser radar utilizes key techniques such as: three direction fixed receiving and dispatching, optical fiber switch, single channel and borderline wind monitoring, launching laser and backward wave frequency discrimination frequency inter locked on molecule transition, atom filtration, complex filtration, twice multiple-frequency remnant light reuse, double optical fiber spectro-surface, square pulse dye laser atom steady frequency. The invention has advantages of stable and reliable working, high detection precision, high automatic, more monitoring parameter and long monitor time.

Description

Technical field: [0001] The invention relates to a laser radar, in particular to a laser radar for comprehensive detection of multi-parameters of middle and upper atmosphere density, temperature, fluctuation and wind field. Background technique: [0002] The comprehensive detection of multi-parameters in the middle and upper atmosphere is of great significance in space physics, atmospheric science, and space environment forecasting. With its high spatial-temporal resolution and high detection sensitivity, lidar can realize quasi-continuous detection, and has unique advantages such as no atmospheric detection blind zone, and has become an irreplaceable and important means of detecting various parameters of the middle and upper atmosphere. At present, for the detection of the middle and upper atmosphere above 20Km, the laser radar using the Rayleigh scattering mechanism can realize the detection of the density, temperature, fluctuation and other parameters of the atmosphere of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/95H01S3/137
CPCY02A90/10
Inventor 龚顺生程学武李发泉戴阳王嘉珉李奉延
Owner WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
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