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Proceedings Paper

Evaluation of a steerable 3D laser scanner using a double Risley prism pair
Author(s): Philip Church; Justin Matheson; Xiaoying Cao; Gilles Roy
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Paper Abstract

Laser scanners based on Risley prism pair technology offer several advantages, including a multitude of scan pattern generation, non-overlapping patterns, and a conical Field-Of-View (FOV) generating a high data density around the center. The geometry and material properties of the prisms define the conical FOV of the sensor, which can be typically set between 15° to 120°. However, once the prisms are defined, the FOV cannot be changed. Neptec Technologies in collaboration with Defence Research and Development Canada has developed a unique scanner prototype using two pairs of Risley prisms. The first pair defines a small 30° FOV which is then steered into a larger 90° Field-Of-Regard (FOR) by using the second pair of prisms. This presents the advantages of a high-resolution scan pattern footprint that can be steered quickly and randomly into a larger area, eliminating the need for mechanical steering equipment. The OPAL Double Risley Pairs (DRP) prototype was recently evaluated at Yuma Proving Ground with the scanner positioned atop a tower and overlooking various types of targets while dust was generated by a helicopter. Results will be presented in clear and dusty conditions, showing examples of moving a high resolution FOV within the FOR.

Paper Details

Date Published: 5 May 2017
PDF: 9 pages
Proc. SPIE 10197, Degraded Environments: Sensing, Processing, and Display 2017, 101970O (5 May 2017); doi: 10.1117/12.2262198
Show Author Affiliations
Philip Church, Neptec Technologies Corp. (Canada)
Justin Matheson, Neptec Technologies Corp. (Canada)
Xiaoying Cao, Neptec Technologies Corp. (Canada)
Gilles Roy, Defence Research and Development Canada (Canada)

Published in SPIE Proceedings Vol. 10197:
Degraded Environments: Sensing, Processing, and Display 2017
John (Jack) N. Sanders-Reed; Jarvis (Trey) J. Arthur III, Editor(s)

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