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Proceedings Paper

Standoff detection of bioaerosols over wide area using a newly developed sensor combining a cloud mapper and a spectrometric LIF lidar
Author(s): Sylvie Buteau; Jean-Robert Simard; Gilles Roy; Pierre Lahaie; Denis Nadeau; Pierre Mathieu
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Paper Abstract

A standoff sensor called BioSense was developed to demonstrate the capacity to map, track and classify bioaerosol clouds from a distant range and over wide area. The concept of the system is based on a two steps dynamic surveillance: 1) cloud detection using an infrared (IR) scanning cloud mapper and 2) cloud classification based on a staring ultraviolet (UV) Laser Induced Fluorescence (LIF) interrogation. The system can be operated either in an automatic surveillance mode or using manual intervention. The automatic surveillance operation includes several steps: mission planning, sensor deployment, background monitoring, surveillance, cloud detection, classification and finally alarm generation based on the classification result. One of the main challenges is the classification step which relies on a spectrally resolved UV LIF signature library. The construction of this library relies currently on in-chamber releases of various materials that are simultaneously characterized with the standoff sensor and referenced with point sensors such as Aerodynamic Particle Sizer® (APS). The system was tested at three different locations in order to evaluate its capacity to operate in diverse types of surroundings and various environmental conditions. The system showed generally good performances even though the troubleshooting of the system was not completed before initiating the Test and Evaluation (T&E) process. The standoff system performances appeared to be highly dependent on the type of challenges, on the climatic conditions and on the period of day. The real-time results combined with the experience acquired during the 2012 T & E allowed to identify future ameliorations and investigation avenues.

Paper Details

Date Published: 16 October 2013
PDF: 11 pages
Proc. SPIE 8901, Optics and Photonics for Counterterrorism, Crime Fighting and Defence IX; and Optical Materials and Biomaterials in Security and Defence Systems Technology X, 890109 (16 October 2013); doi: 10.1117/12.2028681
Show Author Affiliations
Sylvie Buteau, Defence Research and Development Canada, Valcartier (Canada)
Jean-Robert Simard, Defence Research and Development Canada, Valcartier (Canada)
Gilles Roy, Defence Research and Development Canada, Valcartier (Canada)
Pierre Lahaie, Defence Research and Development Canada, Valcartier (Canada)
Denis Nadeau, Defence Research and Development Canada, Valcartier (Canada)
Pierre Mathieu, Defence Research and Development Canada, Valcartier (Canada)


Published in SPIE Proceedings Vol. 8901:
Optics and Photonics for Counterterrorism, Crime Fighting and Defence IX; and Optical Materials and Biomaterials in Security and Defence Systems Technology X
Roberto Zamboni; Douglas Burgess; Gari Owen; Francois Kajzar; Attila A. Szep, Editor(s)

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