Fig. 1. Schematic diagram of spatial filtering of vortex light field in detection lidar in strong scattering environment

Fig. 2. Comparison of with vortex light field ranging error and without vortex light field ranging error when the target is at (a) 1 m, (b) 1.5 m and (c) 2 m locations and the scattering medium is of varying turbidity

Fig. 3. The larger the attenuation length, the more obvious the correction of ranging error by vortex light field