Second-Generation, Scanning, 3D Imaging Lidars Based on

Sigma Space is building a new generation of 3D imaging/polarimetric lidars based on photon-counting for use in small aircraft or mini-UAV’s. The most recent system is designed to provide contiguous, high resolution (15 cm horizontal, 3 cm vertical) 3D volumetric images of the underlying terrain on a single overflight from an altitude of 1 km. Based on prior experiments with a first generation NASA prototype system and significant technological improvements, the second generation instruments are expected to have greatly enhanced spatial resolution, areal coverage, and ability to penetrate atmospheric haze, tree canopies, and even water columns for underwater imaging.