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Proceedings Paper

Covert situational awareness with handheld ultrawideband short-pulse radar
Author(s): Mark A. Barnes; Soumya Nag; Tim Payment
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Paper Abstract

Law enforcement and emergency services all face the difficult task of determining the locations of people within a building. A handheld radar able to detect motion through walls and other obstructions has been developed to fill this need. This paper describes the attributes and difficulties of the radar design and includes test results of the radar's performance. This discussion begins by summarizing key user requirements and the electromagnetic losses of typical building materials. Ultra-wideband (UWB) short pulse radars are well suited for a handheld sensor primarily because of their inherit time isolation in high clutter environments and their capability to achieve high resolution at low spectral center frequencies. There are also constraints that complicate the system design. Using a technique referred to as time-modulation allows the radars to reject range ambiguities and enhances electromagnetic compatibility with similar radars and ambient systems. An outline of the specifications of the radar developed and a process diagram on how it generates a motion map showing range and direction of the people moving within structures is included. Images are then presented to illustrate its performance. The images include adults, child, and a dog. The test results also include data showing the radar's performance through a variety of building materials.

Paper Details

Date Published: 22 August 2001
PDF: 12 pages
Proc. SPIE 4374, Radar Sensor Technology VI, (22 August 2001); doi: 10.1117/12.438164
Show Author Affiliations
Mark A. Barnes, Time Domain Corp. (United States)
Soumya Nag, Time Domain Corp. (United States)
Tim Payment, Time Domain Corp. (United States)

Published in SPIE Proceedings Vol. 4374:
Radar Sensor Technology VI
Robert Trebits; James L. Kurtz, Editor(s)

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