Imaging through scattering media: performances and technical concerns of range-gated equipment

摘要

After a brief comparison between acoustics and optics in underwater imaging and a short description of optical propagation in scattering media, different methods of imaging with a blue-green laser source are described. As examples, description of two experimental mock-ups are shown: point by point scanning imager and global TV. Possible enhancement by polarimetric analysis is mentioned. The main technical constraints for operational lidar imagers are further discussed.