Method and device for determining reference height of laser radar equation for observing aerosol

Abstract

The invention relates to a laser radar equation reference height determination method and device for observing aerosol. The method comprises the following steps: determining a height with a signal-to-noise ratio of a laser radar echo signal and a distance correction value meeting a preset condition in each height in a preset height range; wherein the preset height range is set on the basis of searching an atmospheric cleaning layer; each height in the preset height range is selected by taking the highest height in the preset height range as a starting point and taking the laser radar resolution as an interval step length; and based on the height, determining the reference height of the laser radar equation by adopting a backscattering coefficient profile inversion technology. The method for determining the reference height of the laser radar equation is wide in application range, low in cost, simple and effective, and then development of observation of the aerosol vertical profile through the laser radar is promoted.

Description

Technical field [0001] The present invention relates to the field of atmospheric aerosol remote illumination radar technology, in particular to the lidar equation for observing aerosols reference height determination method and apparatus. Background [0002] Aerosols refer to solid or liquid particles suspended in the atmosphere, which can act as condensation nuclei for water droplets and ice crystals, absorbers and scatterers of solar radiation, and participate in various chemical cycles, which are an important part of the atmosphere. Lidar has long been used for aerosol observation, but until now the long-term accurate aerosol vertical profile is still difficult to determine, the reason is that the complex and changeable atmospheric state interferes with aerosol observation, and another important reason is the non-automatic nature of the inversion method. Specifically, the lidar used to invert the vertical profile of the aerosol is mainly divided into two categories, one is the...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method and device for determining the reference height of the laser radar equation for observing aerosols, so as to solve the difficult problem in the prior art that it is difficult to select a suitable reference height to accurately invert the vertical profile of the aerosol , so that the lidar equation reference height can be determined in a simple way

Images