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Journal of Applied Remote Sensing

Compact 405-nm random-modulation continuous wave lidar for standoff biological warfare detection
Author(s): Zijian Yang; Chao Li; Ming Yu; Feng Chen; Taihu Wu
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Paper Abstract

A compact bioaerosol standoff system was developed and tested for bio warfare agent stimulant aerosol detection. It used a continuous-wave semiconductor laser diode with an output power of 100 mW and a wavelength of 405 nm. It was modulated with a pseudorandom code at 100 MHz to provide the 1.5 m range resolution for both scattering and fluorescence detection. A 200-mm-diameter Cassegrain telescope and four photon-counting detection channels centered at 405 nm (two polarization detection channels), 450 nm, and 530 nm constituted the optical receiver. A field-programmable gate array chip was controlled to generate the laser driver signal and record four synchronized channel signals. Field tests were performed with stimulant aerosols of <italic<Bacillus subtilis</italic<, <italic<Staphylococcus aureus</italic<, and yeast. The detected biological warfare stimulant aerosol lidar was released at ranges of several hundred meters. The preliminary result showed that the fluorescence channel detected the stimulants at ranges up to 90 m and the elastic scattering channel up to 200 m.

Paper Details

Date Published: 28 May 2015
PDF: 14 pages
J. Appl. Remote Sens. 9(1) 096042 doi: 10.1117/1.JRS.9.096042
Published in: Journal of Applied Remote Sensing Volume 9, Issue 1
Show Author Affiliations
Zijian Yang, The Academy of Military Medical Sciences (China)
Chao Li, The Academy of Military Medical Sciences (China)
Ming Yu, The Academy of Military Medical Sciences (China)
Feng Chen, The Academy of Military Medical Sciences (China)
Taihu Wu, Academy of Military Medical Sciences (China)

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