A Scanning Polarization LiDAR System for Atmospheric Particulate Matter Monitoring

Abstract

The invention relates to a scanning polarization lidar system for monitoring atmospheric particles, including a transceiver system, a display system, a evidence collection system, a scanning system, a signal processing system, and an optical signal processing system; the transceiver system, display system, signal processing system, and optical signal The processing systems are all located in the casing, the scanning system includes a horizontal rotation box, a vertical rotation box and a linkage rod. The horizontal rotation box is coaxially arranged with the transceiver system, and the optical signal processing system matches the position of the transceiver system. The invention can effectively reduce the optical path offset caused by structural strain, has high overall monitoring performance and monitoring accuracy, is less affected by the weather, and can realize long-distance monitoring and rotary scanning in both horizontal and vertical directions. Atmospheric aerosol lidars sold in the market cannot rotate 360° horizontally without limit and synchronize forensics.

Description

technical field [0001] The invention relates to the field of optics, in particular to a scanning polarization laser radar system for monitoring atmospheric particles. Background technique [0002] The traditional optical system has the problem that the transmitting unit and the receiving unit are not in the same axis, and the optical stability is greatly affected by temperature due to different structural parts, and the receiving signal is greatly affected by the background sunlight, which makes signal analysis difficult. [0003] The traditional emission light source mostly adopts the external optical fiber type, which has problems such as unstable emission signal and short life; the traditional signal processing system has low extraction accuracy for weak signals and is susceptible to electromagnetic interference; the traditional atmospheric aerosol lidar Scanning uses the rotation of the radar body, which is very clumsy and the radar is exposed to the outside for a long t...

AI Technical Summary

Problems solved by technology

[0002] The traditional optical system has the problem that the transmitting unit and the receiving unit are not in the same axis, and the optical stability is greatly affected by temperature due to different structural parts, and the receiving signal is greatly affected by the background sunlight, which makes signal analysis difficult.

[0003] The traditional emission light source mostly adopts the external optical fiber type, which has problems such as unstable emission signal and short life; the traditional signal processing system has low extraction accuracy for weak signals and is susceptible to electromagnetic interference; the traditional atmospheric aerosol lidar Scanning uses the rotation of the radar body, which is very clumsy and the radar is exposed to the outside for a long time, which reduces the service life of the radar body and is greatly affected by the weather.

[0004] Part of the new atmospheric aerosol lidar uses a split scanning device, but it cannot solve the problem of synchronization between the recording system and the scanning system, and cannot achieve arbitrary angle locking and 360° continuous rotation

[0005] The traditional forensics system cannot realize long-distance high-definition day and night forensics, without optical fog penetration, laser lighting and other functions; the traditional software system has no independent database, etc.

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