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Remote Sens. 2016, 8(11), 958; doi:10.3390/rs8110958

Scanning, Multibeam, Single Photon Lidars for Rapid, Large Scale, High Resolution, Topographic and Bathymetric Mapping

Sigma Space Corporation, 4600 Forbes Blvd., Lanham, MD 20706, USA
Academic Editors: Jie Shan, Juha Hyyppä, Guoqing Zhou and Prasad S. Thenkabail
Received: 29 July 2016 / Revised: 19 October 2016 / Accepted: 10 November 2016 / Published: 18 November 2016
(This article belongs to the Special Issue Airborne Laser Scanning)
View Full-Text   |   Download PDF [31180 KB, uploaded 18 November 2016]   |  

Abstract

Several scanning, single photon sensitive, 3D imaging lidars are herein described that operate at aircraft above ground levels (AGLs) between 1 and 11 km, and speeds in excess of 200 knots. With 100 beamlets and laser fire rates up to 60 kHz, we, at the Sigma Space Corporation (Lanham, MD, USA), have interrogated up to 6 million ground pixels per second, all of which can record multiple returns from volumetric scatterers such as tree canopies. High range resolution has been achieved through the use of subnanosecond laser pulsewidths, detectors and timing receivers. The systems are presently being deployed on a variety of aircraft to demonstrate their utility in multiple applications including large scale surveying, bathymetry, forestry, etc. Efficient noise filters, suitable for near realtime imaging, have been shown to effectively eliminate the solar background during daytime operations. Geolocation elevation errors measured to date are at the subdecimeter level. Key differences between our Single Photon Lidars, and competing Geiger Mode lidars are also discussed. View Full-Text
Keywords: airborne multibeam lidar; single photon lidar; 3D imaging; photon-counting; surveying; forestry; bathymetry; cryosphere airborne multibeam lidar; single photon lidar; 3D imaging; photon-counting; surveying; forestry; bathymetry; cryosphere
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Degnan, J.J. Scanning, Multibeam, Single Photon Lidars for Rapid, Large Scale, High Resolution, Topographic and Bathymetric Mapping. Remote Sens. 2016, 8, 958.

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