Ground short wave infrared CO2 vertical column concentration remote measuring device

Abstract

The invention discloses a ground short wave infrared CO2 vertical column concentration remote measuring device, wherein a system drives a telescope system by a two-dimensional motor to perform high-precision tracking measurement on the direct sunlight and collect the direct sunlight which runs through air, then calculates out a weighting function curve of CO2 by using a radiation transfer model, and analyzes out the vertical column concentration information of the CO2 by using a least square method; a light filter and a focusing lens are arranged sequentially on a light path behind the telescope system, the light emitted from the focusing lens is precisely imaged on an incident slit of a spectrograph arranged in a constant-temperature box through a silica fiber, after being dispersed by the spectrograph, the light is imaged on a indium-gallium-arsenic detector, and after an analogue-digital conversation, the light then is transmitted into a computer for processing; meanwhile, a GPS (global positioning system) is arranged in the device, and the GPS is communicated with the computer through a USB (universal serial bus) data line. The device can be used for CO2 vertical column concentration measurement in air and emission source emission supervision monitoring and researching.

Description

technical field [0001] The invention belongs to the field of optical measurement methods, in particular to a method for atmospheric CO 2 Short-wave infrared spectroscopy measurement setup for vertical column concentration telemetry. Background technique [0002] CO 2 It is an important greenhouse gas and plays an important role in the greenhouse effect of global warming. CO 2 The gas monitoring technology has gone through the initial on-site sampling, laboratory analysis, on-site on-line monitoring and the development of new optical telemetry technology in recent years. Optical telemetry technology can realize on-site non-contact, real-time online continuous measurement, and telemetry can better reflect the CO of the entire atmosphere. 2 concentration distribution and changes. [0003] Currently used for CO 2 The main methods of gas telemetry are: laser radar (LIDAR), Fourier spectrometer (FTS), etc., and used to measure CO 2 The equipment distributed around the world...

AI Technical Summary

Problems solved by technology

For lidar equipment, although CO can be given 2 vertical distribution, but the system is complex, the cost is high, and the measurement band is limited by the wavelength of the laser, which requires high requirements for the laser; the Fourier spectrometer can also remotely measure CO 2 Concentration distribution, but the cost is also high and the equipment is complicated

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