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17 September 2009 UV-LIF lidar for standoff BW aerosol detection
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An ultraviolet (UV) laser induced fluorescence (LIF) light detection and ranging (LIDAR) system has been constructed and commissioned by Dstl and demonstrated to be an effective technique for discriminating between some common fluorescent potentially interfering aerosols and biological warfare agent (BWA) simulants at a distance remote from the release. The Mk 3 UV-LIF LIDAR employs the fundamental wavelength (1064 nm) of a Nd:YAG laser to spatially map aerosol clouds, and the fourth harmonic (266 nm) to excite fluorescence. The fluorescence emission is spectrally resolved into ten detection channels between 300-500 nm, permitting classification by a discrimination algorithm. The UV-LIF LIDAR was trialled in 2007 in the Joint Ambient Breeze Tunnel (JABT) and on the open range, at the US Army Dugway Proving Ground (DPG), Utah. In the JABT, calibration instruments were used to characterise the BWA simulant and interferent aerosol releases, permitting calculation of the system's limits of detection (LoD) and discrimination ability.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Rebecca J. Hopkins, Stephen J. Barrington, Michael J. Castle, Karen L. Baxter, Nicola V. Felton, Joseph Jones, Clare Griffiths, Virginia Foot, and Kit Risbey "UV-LIF lidar for standoff BW aerosol detection", Proc. SPIE 7484, Optically Based Biological and Chemical Detection for Defence V, 748409 (17 September 2009);

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