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Coherent measurement device for greenhouse gas

A measuring device and technology for greenhouse gases, applied in the measurement of phase influence characteristics, etc., can solve the problems of long time period of carbon dioxide satellite remote sensing measurement, immature series products, and large measurement area, so as to suppress background noise and solar energy. Effects of background light noise, high spectral resolution, and high spatial resolution

Pending Publication Date: 2022-04-08
CENT FOR HYDROGEOLOGY & ENVIRONMENTAL GEOLOGY CGS +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the two methods have their own shortcomings. The CO2 remote sensing measurement period is long and the measurement area is large.
However, the lidar measurement method is limited by the laser light source, and there are no mature series of carbon dioxide and methane lidars.

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Embodiment Construction

[0026] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0027] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, it only means that it is consistent with the up, down, left and right directions of the accompanying drawings, and does not limit the structure. It is for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element needs to have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0028] Explanation of terms: The terms "installation", "c...

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Abstract

The invention relates to a coherent measurement device for greenhouse gas. The coherent measurement device comprises an optical frequency comb light source, a half-wave plate, a quarter-wave plate, an optical fiber circulator, an optical beam expander, a single-mode optical fiber polarization controller, a carbon dioxide laser, a methane laser, an optical switch, an optical fiber beam combiner, a photoelectric detector, a filter, a data acquisition and processing device and a reflecting mirror. The optical frequency comb light source, the half-wave plate, the quarter-wave plate, the optical fiber circulator and the optical beam expander are connected in sequence, the optical fiber circulator, the single-mode optical fiber polarization controller, the optical fiber beam combiner, the photoelectric detector, the filter and the data acquisition and processing device are connected in sequence, and the carbon dioxide laser and the methane laser are both connected with the optical switch. The optical switch is connected with the optical fiber beam combiner; the data acquisition and processing device is connected with the carbon dioxide laser and the methane laser, and the reflecting mirror is used for receiving laser emitted by the optical beam expanding mirror. The measuring device has the advantages of being wide in measuring range and long in measuring distance.

Description

technical field [0001] The invention relates to the technical field of greenhouse gas measurement, in particular to a coherent measurement device for greenhouse gas. Background technique [0002] The information disclosed in the Background of the Invention is only intended to increase the understanding of the general background of the present invention, and is not necessarily to be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled in the art. [0003] Greenhouse gas emissions cause the greenhouse effect and increase the global temperature. Global warming has become an important obstacle restricting the sustainable development of human economy and society. Controlling pollutants and greenhouse gas emissions has become a current global issue. [0004] At present, the measurement methods for carbon dioxide and methane generally adopt the in-situ measurement method. However, this method can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/45
Inventor 夏金宝史彦新张百涛董翰川何京良
Owner CENT FOR HYDROGEOLOGY & ENVIRONMENTAL GEOLOGY CGS
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