Near-infrared all-fiber water vapor differential absorption laser radar

A differential absorption and laser radar technology, which is applied in the direction of material analysis, material analysis, and re-radiation through optical means, can solve the problems of loose and uncompact structure, complex data inversion, and large volume, so as to avoid inconsistent response, The effect of simplifying the inversion algorithm and simplifying the system structure
CN112799099APending Publication Date: 2021-05-14南京泰爱信科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
南京泰爱信科技有限公司
Publication Date
2021-05-14

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Abstract

The invention discloses a near-infrared all-fiber water vapor differential absorption laser radar, and belongs to the technical field of laser radars. The near-infrared all-fiber water vapor differential absorption laser radar comprises a laser light source used for outputting on-band continuous laser and off-band continuous laser, an optical switch, a pulse generator, an optical amplifier, an optical transceiver telescope, a filter, a detector, an acquisition card and a data processing module. The laser light source adopts a near-infrared long wave band with the wavelength range of 1100-2526 nm as a measurement wave band of water vapor differential absorption, and compared with common near-infrared short waves, molecular Rayleigh signals can be neglected, so that the water vapor inversion precision is improved, and an inversion algorithm is simplified. According to the invention, wavelength division multiplexing is realized by adopting the optical switch, simultaneous detection of on-band and off-band signals is realized, the system structure is simplified, and the system cost is saved.
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Description

Technical field

[0001] The present invention relates to the field of water vapor laser radar, in particular, to a near-infrared full-optical fiber water vapor difference absorption laser radar.Background technique

[0002] Water Vapor is the only substance in the earth atmosphere, and it has played an important role in many atmospheric physics and chemistry. In the convection layer, water vapor affects the formation of aerosols and clouds, and heat exchanges through phase transitions. Water vapor has many absorption bands in the infrared band, so it is the most important greenhouse gas in the atmosphere, and its positive and negative feedback effects a huge impact on temperature changes, contributing about 60% of the greenhouse effect.

[0003] The current atmospheric water vapor detection includes sampling detection and remote sensing detection, remote sensing detection, and is divided into passive remote sensing and active remote sensing detection. Among them, passive remote sensing methods...

Claims

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