Design and Simulation of Cloud-aerosol Detection LiDAR Based on Multi Beam Polarization Detection System
The space-borne laser detection system has the capability to detect the vertical profile of clouds and aerosols.Exist-ing payloads,such as the Caliop radar on the US Calipso satellite,the multi-beam LiDAR on the domestic"Goumang"satellite,and the atmospheric detection lLiDAR on air pollution monitoring satellites,are limited to single-beam cloud-aerosol detection with a narrow detection area.A proposed solution is a multi-beam cloud-aerosol detection LiDAR system that operates in a satellite orbit of 800 km and utilizes a multi-beam detection system to extend radar coverage to 30 km.The central beam employs dual-wavelength polarization detection for obtaining vertical profiles and particle species of atmospheric aerosols and clouds,while the edge beam uses single-wavelength detection for cloud profiling.This approach significantly improves data acquisition efficiency through simulation-based verification of dynamic range and high sensitivity single photon detections which reduce laser energy require-ments,as well as radar weight and power consumption.Finally,through simulation,the detection effect of space-borne multi-beam cloud-aerosol detection radar on typical clouds and aerosols is verified.
Multi beamAnalog detectionSingle photon detectionLiDAR
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