Multi wavelength polarized Raman atmospheric detection lidar can obtain profiles of atmospheric aerosols and water vapor in the troposphere. Radar can independently detect extinction coefficient, backscattering coefficient, and calculate radar ratio by measuring the Raman scattering signal of nitrogen molecule vibration, without the need to assume constants, greatly improving inversion accuracy; At the same time, real-time data on atmospheric water vapor mixing ratio and relative humidity profile can be obtained, which can be used to deduct the influence of humidity on particle concentration, improve its inversion accuracy, and study the hygroscopic growth characteristics of particles in the atmosphere and their impact on visibility.

·High power laser, suitable for complex weather monitoring, Raman channel detection of over 4 kilometers

·Three wavelength eight channel detection, achieving detection of extinction coefficient, proportion of multi particle size particles, and water vapor mixing ratio

·Simulation+photon combination acquisition, avoiding near-field signal saturation and far-field signal weakness, reducing blind spots, and achieving long-distance detection

·Automated detection process, no calibration required, supports long-term unmanned operation

Time resolution: adjustable from 1 to 30 minutes

Spatial resolution: adjustable at 7.5m and its multiples

Maximum effective detection range: ≥ 10 km (meter scattering channel) ≥ 5km (Raman scattering channel)

Laser: Nd: YAG solid-state laser, water-cooled

Laser wavelength: 355nm/532nm/1064nm

Telescope aperture: ≥ 300mm

Optical Path Design: Cassegrain Reflective

Channel: 8 channels

Detector: PMT/APD

Receiving channel:

355nm P channel/532nm P channel/1064nm

355nmS channel/532nm S channel (polarization channel)

387nm/607nm (Raman channel)

407nm (water vapor channel)