14 February 1997 Active range-gated near-IR TV system for all-weather surveillance
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Proceedings Volume 2935, Surveillance and Assessment Technologies for Law Enforcement; (1997); doi: 10.1117/12.266798
Event: Enabling Technologies for Law Enforcement and Security, 1996, Boston, MA, United States
Abstract
Adverse weather, lack of background illumination and interference from artificial light sources can considerably reduce the effectiveness of passive LLLTV systems. Viewing in such conditions can be considerably enhanced by the addition of a pulsed laser illuminator synchronized to a gated LLLTV. Since the system has its own light source, surveillance is possible in zero or ultra-low light conditions. Furthermore using the technique of range gating, the effects of backscattering that occur in poor visibility conditions can be greatly reduced. The high resolution and self-illumination capability of the system permits positive identification of targets that would be undetectable or unresolvable with FLIR type systems.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kevin J. Snell, Andre Parent, Marc Levesque, Pierre Galarneau, "Active range-gated near-IR TV system for all-weather surveillance", Proc. SPIE 2935, Surveillance and Assessment Technologies for Law Enforcement, (14 February 1997); doi: 10.1117/12.266798; https://doi.org/10.1117/12.266798
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KEYWORDS
Fiber optic illuminators

Signal to noise ratio

Cameras

Semiconductor lasers

Surveillance

Pulsed laser operation

Imaging systems

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