Atmospheric sulfur dioxide and ozone profile Raman-Rayleigh/Lamy multifunctional laser radar measuring device and detection method

Abstract

The invention provides an atmospheric sulfur dioxide and ozone profile Raman-Rayleigh / Lamy multifunctional laser radar measuring device and a detection method. The device can be used for accurately measuring ozone and sulfur dioxide which influence the atmospheric environment and climate in a large height range for a long time, and measured data have high accuracy and reliability and can be used for researching the atmospheric environment and climate change. The device comprises an optical path, a data acquisition unit and a main control computer, wherein the front part of the optical path comprises a laser emitter, a beam expander, a reflecting mirror, a receiving telescope and a collimating mirror in sequence; and the back part of the optical path is provided with a dichroic mirror and a semi-reflective and semi-permeable lens for receiving respectively.

Description

Technical field: [0001] The invention relates to a Raman-Rayleigh / meter multifunctional laser radar measuring device and detection method for atmospheric sulfur dioxide and ozone profiles, belonging to the field of laser atmospheric detection. Background technique: [0002] The conventional traditional methods for measuring atmospheric sulfur dioxide and ozone profiles are radiosonde and lidar measurements. [0003] Insufficiency and existing problems: There are great uncertainties in the detection accuracy of radiosondes and the actual geospatial position coordinates; the sun photometer measures the ozone and sulfur dioxide content of the entire atmosphere, and cannot perform spatially resolved measurements; The lidar measurement is more convenient and accurate than the sounding measurement, but as far as the measurement of the atmospheric ozone profile is concerned with the lidar, the conventional measurement method at home and abroad is the differential absorption lidar m...

AI Technical Summary

Problems solved by technology

[0003] Insufficiency and existing problems: There are great uncertainties in the detection accuracy of radiosondes and the actual geospatial position coordinates; the sun photometer measures the ozone and sulfur dioxide content of the entire atmosphere, and cannot perform spatially resolved measurements; The lidar measurement is more convenient and accurate than the sounding measurement, but as far as the measurement of the atmospheric ozone profile is concerned with the lidar, the conventional measurement method at home and abroad is the differential absorption lidar measurement, and the conditions of the laser light source required by this method are very harsh. , the life of the dye is very short, resulting in unstable energy of the laser light source, and it is uneconomical;

[0004] The main problem: the bands used are all in the ultraviolet band, but both ozone and sulfur dioxide are absorbed in the ultraviolet band, which leads to mutual interference in the detection of ozone and sulfur dioxide, making the measurement results inaccurate

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