Laser radar for preventing signal saturation distortion under heavy-haze weather

Abstract

The invention relates to the technical field of air pollution monitoring, in particular to a laser radar for preventing signal saturation distortion under the heavy-haze weather. The laser radar comprises a laser emission unit, a laser receiving unit, an industrial personal computer and an automatic correction system. The laser emission unit emits a laser signal to an atmosphere target, and the laser signal is reflected by the atmosphere target to generate an echo signal; the laser receiving unit receives the echo signal and sends the echo signal into an automatic laser radar signal identification system and a particulate channel detection unit; the industrial personal computer controls an automatic signal correction system in communication with the industrial personal computer according to a saturation signal processed by the automatic laser radar signal identification system; the automatic correction system responds to a signal input by the industrial personal computer and controls alaser control generator in serial port connection with the automatic correction system to generate a signal for controlling the laser power to be automatically matched with a range of a collection card. According to the laser radar, the problem of signal saturation distortion under the heavy-haze weather is solved, through a corresponding correction algorithm, the error influence is eliminated, and the precise pollutant concentration under the heavy-haze weather condition is obtained.

Description

technical field [0001] The invention relates to the technical field of air pollution monitoring, in particular to a laser radar for preventing signal saturation and distortion in heavy haze weather. Background technique [0002] LiDAR is playing an increasing role in detecting atmospheric environmental pollution. my country is currently facing relatively large particulate matter and ozone pollution. Especially in the northern region, heavy smog occurs from time to time. As an active remote sensing tool, lidar can provide the three-dimensional distribution and change of the extinction coefficient and backscatter coefficient of aerosol, and it has initially received attention from environmental protection, meteorology and research departments. However, in the application in our country, the problem of signal saturation and distortion often occurs, which leads to the distortion of the inversion results, and the atmospheric three-dimensional monitoring data in heavy fog and ha...

AI Technical Summary

Problems solved by technology

The lidar that prevents signal saturation and distortion in heavy fog and haze weather has the characteristics of solving the problem of signal saturation and distortion in heavy fog and haze weather, and at the same time eliminating the influence of errors through corresponding correction algorithms to obtain accurate pollutant concentrations under heavy fog and haze weather conditions

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