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Proceedings Paper

Real-time, wide-area hyperspectral imaging sensors for standoff detection of explosives and chemical warfare agents
Author(s): Nathaniel R. Gomer; Shawna Tazik; Charles W. Gardner; Matthew P. Nelson
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Paper Abstract

Hyperspectral imaging (HSI) is a valuable tool for the detection and analysis of targets located within complex backgrounds. HSI can detect threat materials on environmental surfaces, where the concentration of the target of interest is often very low and is typically found within complex scenery. Unfortunately, current generation HSI systems have size, weight, and power limitations that prohibit their use for field-portable and/or real-time applications. Current generation systems commonly provide an inefficient area search rate, require close proximity to the target for screening, and/or are not capable of making real-time measurements.

ChemImage Sensor Systems (CISS) is developing a variety of real-time, wide-field hyperspectral imaging systems that utilize shortwave infrared (SWIR) absorption and Raman spectroscopy. SWIR HSI sensors provide wide-area imagery with at or near real time detection speeds. Raman HSI sensors are being developed to overcome two obstacles present in standard Raman detection systems: slow area search rate (due to small laser spot sizes) and lack of eye-safety. SWIR HSI sensors have been integrated into mobile, robot based platforms and handheld variants for the detection of explosives and chemical warfare agents (CWAs). In addition, the fusion of these two technologies into a single system has shown the feasibility of using both techniques concurrently to provide higher probability of detection and lower false alarm rates.

This paper will provide background on Raman and SWIR HSI, discuss the applications for these techniques, and provide an overview of novel CISS HSI sensors focusing on sensor design and detection results.

Paper Details

Date Published: 3 May 2017
PDF: 8 pages
Proc. SPIE 10183, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XVIII, 1018303 (3 May 2017); doi: 10.1117/12.2262716
Show Author Affiliations
Nathaniel R. Gomer, ChemImage Corp. (United States)
Shawna Tazik, ChemImage Corp. (United States)
Charles W. Gardner, ChemImage Corp. (United States)
Matthew P. Nelson, ChemImage Corp. (United States)


Published in SPIE Proceedings Vol. 10183:
Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XVIII
Augustus Way Fountain; Jason A. Guicheteau, Editor(s)

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