NDLI: Non-invasive ultrasonic instrument for counter-terrorism and drug interdiction operations

Content Provider	IEEE Xplore Digital Library
Author	Diaz, A.A. Burghard, B.J. Skorpik, J.R. Shepard, C.L. Samuel, T.J. Pappas, R.A.
Copyright Year	2003
Description	Author affiliation: National Security Directorate, Pacific Northwest Nat. Lab., Richland, WA, USA (Diaz, A.A.; Burghard, B.J.; Skorpik, J.R.; Shepard, C.L.; Samuel, T.J.; Pappas, R.A.)
Abstract	The Pacific Northwest National Laboratory (PNNL) has developed a portable, battery-operated, handheld ultrasonic device that provides non-invasive container interrogation and material identification capabilities. The technique governing how the acoustic inspection device (AID) functions, involves measurements of ultrasonic pulses (0.1 to 5 MHz) that are launched into a container or material. The return echoes from these pulses are analyzed in terms of time-of-flight and frequency content to extract physical property measurements (the acoustic velocity and attenuation coefficient) of the material under test. The AID performs an automated analysis of the return echoes to identify the material, and detect contraband in the form of submerged packages and concealed compartments in liquid filled containers and solid-form commodities. This device utilizes a database consisting of material property measurements acquired from an automated, ultrasonic fluid characterization system called the Velocity-Attenuation Measurement System (VAMS). Both prototype technologies are discussed here. This manuscript describes the functionality, capabilities and measurement methodology of the technology as it relates to the material property measurements and homeland security applications.
Sponsorship	IEEE Instrum. & Meas. Soc
Starting Page	1275
Ending Page	1280
File Size	492208
Page Count	6
File Format	PDF
ISBN	0780377052
ISSN	10915281
DOI	10.1109/IMTC.2003.1207956
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-05-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Instruments Drugs Acoustic devices Inspection Ultrasonic variables measurement Acoustic pulses Pulse measurements Containers Velocity measurement Acoustic measurements
Content Type	Text
Resource Type	Article
Subject	Instrumentation Electrical and Electronic Engineering

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