High-resolution wide range dual-channel scheimpflug lidar for aerosols detection

A novel scheimpflug lidar (S-lidar) based dual-channel detection approach is proposed and demonstrated for atmospheric aerosol measurement. As the use of the two sets of detection devices at the receiving end, two echo signals on the detection path are achieved by employing data interpolation fusion algorithms in signal processing. The resolution of the system is effectively improved, and the detection blind zone is reduced. Compared with the S-lidar system in which a single-channel detector is used, the resolution of the dual-channel S-lidar system can be improved by nearly 1.6X at 3 km, and the detection blind spot can be reduced to 33 m. The developed system has a compact structure with a volume of approximately 0.5 m3.