Atmospheric aerosol analysis method based on coherent laser radar spectral intensity data

An atmospheric aerosol and lidar technology, which is applied in the direction of material analysis, material analysis, color/spectral property measurement by optical means, etc., can solve the problems of atmospheric aerosol analysis that have not yet appeared coherent lidar
CN111458726AActive Publication Date: 2020-07-28青岛镭测创芯科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
青岛镭测创芯科技有限公司
Publication Date
2020-07-28

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Abstract

The present invention provides an atmospheric aerosol analysis method based on coherent laser radar spectrum intensity data, according to the signal detection process analysis of the coherent laser radar, the maximum intensity of the gate spectrum data of different distances contains atmospheric echo information. Spectral intensity data of corresponding height is extracted and can correspondinglyinclude an atmospheric extinction coefficient and a backscattering coefficient atmospheric laser radar equation. The atmospheric extinction coefficient is inverted by utilizing the calculation relationship between the atmospheric backscattering coefficient and the atmospheric extinction coefficient. The coherent laser radar carries out aerosol detection, the application function of the coherent radar is expanded, and the data utilization rate of a coherent system is improved. Compared with traditional aerosol laser radar detection, the spectral intensity data is large in signal-to-noise ratio,and the detection distance and precision have obvious advantages. Moreover, the coherent laser radar is compact in structure, optical components are stable and reliable, and the reliability of the used environment is superior to that of a traditional aerosol radar.
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Description

technical field

[0001] The invention relates to a method for aerosol analysis by using laser radar, in particular to a method for measuring atmospheric aerosol information based on coherent laser radar spectral intensity data. Background technique

[0002] Atmospheric information, such as wind speed, temperature, humidity, aerosol, cloud and other information, plays a very important role. Whether it is for weather forecasting, safe and efficient operation of airports, monitoring of air pollutants, or military applications, it plays a very important role.

[0003] The measurement information of lidar has high temporal and spatial resolution and can be measured continuously, which has obvious advantages compared with traditional atmospheric detection methods. Coherent lidar systems have mature applications, but they are mainly used for atmospheric wind field measurement. In coherent lidar, the echo intensity is converted into spectral data by methods such as Fourier transfor...

Claims

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