A laser radar apparatus with a self-adaptive control dynamic scope

Abstract

The invention discloses a laser radar apparatus with a self-adaptive control dynamic scope. The laser radar apparatus is characterized in that the laser radar apparatus includes a light emitting source, a receiving optical component, an optical fiber and a collimating component; a front optical path of the collimating component is provided with a color separating lens; and each light split optical path of the color separating lens is provided with an optical filter and a photomultiplier; a signal output end of each photomultiplier tube is connected with a signal input end of a signal acquisition device; a signal output end of the signal acquisition device is connected with a control computer; the control computer is connected in a control mode with a gain control unit; and a signal output end of the gain control unit is connected in a control mode with each photomultiplier. As for the whole measurement and control adjustment process of the apparatus of the invention, automatic control and measurement is performed by the control computer to realize the self-adaptive control adjustment of the laser radar control dynamic range and the automatic measurement of the signals.

Description

technical field [0001] The invention relates to a laser radar device for adaptively controlling the dynamic range, which belongs to the field of atmospheric detection. Background technique [0002] The spatial distribution of atmospheric particles, polluting gases and meteorological parameters is an important parameter in atmospheric environment and pollution forecasting. At present, the commonly used methods include on-site sampling, satellite inversion, balloon sounding and lidar detection. The advantages of lidar in detection accuracy, spatial resolution and time resolution make it more and more used in environmental and meteorological research. At present, multi-wavelength differential absorption lidar, Mie scattering lidar and Raman lidar devices are often used to detect the spatial distribution profiles of polluting gases, particulate matter and meteorological parameters in the atmosphere. At present, the lidar acquisition system mostly uses analog or photon counting...

AI Technical Summary

Problems solved by technology

At present, manual adjustment is mostly used, or no adjustment

The manual adjustment method will increase the cost of system use, consume manpower, and it is difficult to avoid the problem of different personal judgment standards

If it is not adjusted, there will be problems with signal distortion or insufficient signal-to-noise ratio, which will lead to a decrease in data quality

All of these make the application of lidar subject to huge restrictions

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