Surface layer non-blind area atmospheric temperature detection Raman laser radar system and method

Abstract

The invention discloses a Raman laser radar system for surface layer non-blind area atmospheric temperature detection. The Raman laser radar system comprises a laser emission subsystem, a lateral telescope receiving and light splitting subsystem and a data acquisition and inversion subsystem. The laser emission subsystem can emit laser with a specific wavelength, and the laser is vertically emitted to the atmosphere; the lateral telescope group receiving and light splitting subsystem is used for receiving, separating, extracting, detecting and extracting pure rotational Raman scattering echo signals relative to the lateral scattering high and low quantum number channel of the laser emission spectrum; and the data acquisition and inversion subsystem is used for acquiring lateral pure rotation Raman scattering echo signals with high and low quantum channels relative to the laser emission spectrum and performing data inversion of the atmospheric temperature, and the data acquisition and inversion subsystem is connected with the lateral telescope receiving and splitting subsystem. The invention further discloses a surface layer non-blind area temperature detection Raman laser radar method.

Description

technical field [0001] The invention belongs to the technical field of atmospheric temperature detection, and in particular relates to a Raman laser radar system for detecting atmospheric temperature without blind areas near the surface, and also relates to a Raman laser radar method for detecting atmospheric temperature without blind areas near the surface. Background technique [0002] Atmospheric temperature is an important meteorological and atmospheric physical parameter. Various natural weather phenomena such as physical chemistry and weather forecast in the atmosphere, atmospheric state changes, and environmental detection can all be studied through atmospheric temperature parameters. In particular, the atmospheric temperature at the bottom and middle of the troposphere is closely related to human life. Changes in atmospheric temperature also indirectly reflect changes in ozone concentration, leading to frequent occurrences of extreme weather around the world under the...

AI Technical Summary

Problems solved by technology

[0003] Pure rotational Raman lidar is a method of measuring the atmospheric temperature profile using lidar technology, but the traditional backward pure rotational Raman scattering lidar cannot detect it when measuring atmospheric temperature due to the existence of blind and transition areas due to the geometric overlap factor Lower Atmospheric Temperature Information

Therefore, the backward pure rotational Raman scattering lidar has certain limitations in the detection of the temperature of the whole layer of the atmosphere, especially the detection of the temperature of the lower layer of the atmosphere.

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