Long-range time-of-flight scanning sensor based on high-speed time-correlated single-photon counting.
We describe a scanning time-of-flight system which uses the time-correlated single-photon counting technique to produce three-dimensional depth images of distant, noncooperative surfaces when these targets are illuminated by a kHz to MHz repetition rate pulsed laser source. The data for the scene are acquired using a scanning optical system and an individual single-photon detector. Depth images have been successfully acquired with centimeter xyz resolution, in daylight conditions, for low-signature targets in field trials at distances of up to 325 m using an output illumination with an average optical power of less than 50 microW.
McCarthy
Aongus
A
School of Engineering and Physical Sciences, Heriot-Watt University, Riccarton, Edinburgh, UK, EH14 4AS.
Collins
Robert J
RJ
Krichel
Nils J
NJ
Fernández
Verónica
V
Wallace
Andrew M
AM
Buller
Gerald S
GS