A method and system for synchronously measuring two parameters of atmospheric environment

Abstract

The invention discloses an atmospheric environment two-parameter simultaneous measurement method and system and belongs to the laser radar field. The method comprises the following steps that: a laseremitting device obtains the atmospheric Rayleigh-Brillouin scattering spectral lines of scattered echo signals in a known atmospheric environment, and the temperature and pressure intensity quantityof the current atmospheric environment are measured; the mathematical model of the atmospheric Rayleigh-Brillouin scattering spectral lines is constructed; the atmospheric Rayleigh-Brillouin scattering spectral lines and the mathematical model are fitted, so that the internal components of Brillouin scattering spectral lines are obtained, and relationships between the internal components of the Brillouin scattering spectral lines and atmospheric pressure intensity and temperature are constructed; and the laser emitting device obtains the atmospheric Rayleigh-Brillouin scattering spectral linesof scattered echo signals in an atmospheric environment to be measured, and temperature and pressure intensity quantity in the atmospheric environment to be measured are calculated according to the internal components of Brillouin scattering spectral lines which are obtained through separation. With the atmospheric environment two-parameter simultaneous measurement method provided by the invention adopted, the parameters of an atmospheric environment can be synchronously and accurately measured with high measurement accuracy.

Description

technical field [0001] The invention relates to the technical field of laser radar, in particular to a method and system for synchronously measuring two parameters of an atmospheric environment. Background technique [0002] In the prior art, in order to measure the parameters of the atmospheric environment, the Brillouin lidar system is used to emit laser signals, and the echo signals scattered by the laser are collected, and the parameters such as temperature and pressure in the atmospheric environment are obtained by extracting the characteristic parameters of the echo signals. In this way, temperature and pressure changes at different altitudes can be obtained in real time. [0003] However, in the atmospheric environment, the accuracy of the characteristic parameters of the collected echo signals of laser scattering is poor, and it is impossible to measure the atmospheric environment parameters accurately and synchronously. To more accurately retrieve the pressure and ...

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Problems solved by technology

[0003] However, in the atmospheric environment, the accuracy of the characteristic parameters of the collected echo signals of laser scattering is poor, and it is impossible to measure the atmospheric environment parameters accurately and synchronously. To more accurately invert the pressure and temperature parameters in the atmosphere, and can achieve simultaneous inversion

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