Advanced 3D imaging lidar concepts for long range sensing

K. J. Gordon; P. A. Hiskett; R. A. Lamb

doi:10.1117/12.2051013

5 June 2014 Advanced 3D imaging lidar concepts for long range sensing

K. J. Gordon, P. A. Hiskett, R. A. Lamb

Proceedings Volume 9114, Advanced Photon Counting Techniques VIII; 91140G (2014) https://doi.org/10.1117/12.2051013
Event: SPIE Sensing Technology + Applications, 2014, Baltimore, MD, United States

Abstract

Recent developments in 3D imaging lidar are presented. Long range 3D imaging using photon counting is now a possibility, offering a low-cost approach to integrated remote sensing with step changing advantages in size, weight and power compared to conventional analogue active imaging technology. We report results using a Geiger-mode array for time-of-flight, single photon counting lidar for depth profiling and determination of the shape and size of tree canopies and distributed surface reflections at a range of 9km, with 4μJ pulses with a frame rate of 100kHz using a low-cost fibre laser operating at a wavelength of λ=1.5 μm. The range resolution is less than 4cm providing very high depth resolution for target identification. This specification opens up several additional functionalities for advanced lidar, for example: absolute rangefinding and depth profiling for long range identification, optical communications, turbulence sensing and time-of-flight spectroscopy. Future concepts for 3D time-of-flight polarimetric and multispectral imaging lidar, with optical communications in a single integrated system are also proposed.

Citation Download Citation

K. J. Gordon, P. A. Hiskett, and R. A. Lamb "Advanced 3D imaging lidar concepts for long range sensing", Proc. SPIE 9114, Advanced Photon Counting Techniques VIII, 91140G (5 June 2014); https://doi.org/10.1117/12.2051013

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