skip navigation


Register for Latest Research

Stay Informed
Register with NCJRS to receive NCJRS's biweekly e-newsletter JUSTINFO and additional periodic emails from NCJRS and the NCJRS federal sponsors that highlight the latest research published or sponsored by the Office of Justice Programs.

NCJRS Abstract

The document referenced below is part of the NCJRS Virtual Library collection. To conduct further searches of the collection, visit the Virtual Library. See the Obtain Documents page for direction on how to access resources online, via mail, through interlibrary loans, or in a local library.


NCJ Number: 228733 Find in a Library
Title: Raytheon's Approach to a Passive mmW High-Throughput Concealed Weapons Detection Portal
Corporate Author: Raytheon Co
Electronic Systems Division
United States of America
Date Published: November 2008
Page Count: 10
Sponsoring Agency: National Institute of Justice (NIJ)
Washington, DC 20531
National Institute of Justice/NCJRS
Rockville, MD 20849
NCJRS Photocopy Services
Rockville, MD 20849-6000
Raytheon Co
Tewksbury, MA 01876
Grant Number: 2007-DE-BX-K180
Sale Source: National Institute of Justice/NCJRS
Box 6000
Rockville, MD 20849
United States of America

NCJRS Photocopy Services
Box 6000
Rockville, MD 20849-6000
United States of America
Document: PDF
Type: Report (Technical)
Format: Document
Language: English
Country: United States of America
Annotation: The goal of the Raytheon program described in this report is to provide to law enforcement personnel an affordable, high-throughput passive imaging system with sufficient sensitivity, resolution, and scan speed to rapidly and accurately detect concealed weapons, including knives, razor blades, guns, bullets, and explosives.
Abstract: The project involves a two-phase, 24-month operation. The current report focuses on phase I procedures and accomplishments. In phase I, an advanced electromagnetic (EM) simulator was used to model the following antenna designs in order to optimize the collection of radiation from 75 to 140 GHz: square spiral, log-periodic, and folded dipole. Each antenna was selected to be modeled because of its unique ability to meet the program goals. For phase I, two different methodologies were proposed to develop and demonstrate mmW imaging. The first possible approach for image generation was to rotate the linear array of detectors at a constant speed in only a single direction. The second approach for a high-throughput concealed weapons detection (CWD) imaging system is for the detector assembly, which includes a lens and a stationary linear detector array, in order to step and scan across the suspect standing in the high-throughput CWD imaging portal. In order to prepare for the imaging demonstration several key pieces of hardware were procured in order to build an eight-channel prototyping board using commercial-off-the-shelf (COTS) operational electronics. The operation of the prototyping board is described in this report. The imaging demonstration of the eight-channel linear array is described. The next phase of the project will improve the sensitivity of the devices by using micro-lenses and mmW ARC to progress toward achieving passive mmW imaging. In addition, a larger linear array with the proper center-to-center spacing will be developed, eliminating the need for raster scanning. The larger array will also enable imaging of larger targets. 9 figures and 1 table
Main Term(s): Police equipment
Index Term(s): Concealed weapons detection; Metal detection devices; NIJ final report; Science and Technology; Technology transfer
To cite this abstract, use the following link:

*A link to the full-text document is provided whenever possible. For documents not available online, a link to the publisher's website is provided. Tell us how you use the NCJRS Library and Abstracts Database - send us your feedback.