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Proceedings Paper

Forward-looking high-resolution GPR system
Author(s): Joel Kositsky; Peyman Milanfar
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Paper Abstract

A high-resolution ground penetrating radar system was designed to help define the optimal radar parameters needed for the efficient standoff detection of buried and surface- laid antitank mines. The design requirements call for a forward-looking GPR capable of detecting antitank miens in a 5 to 8 meter wide swath, 7 to 60 meters in front of a mobile platform. The system has a resolution goal of 15 cm both in range and azimuth. The range and azimuthal resolutions are achieved by using a 2.7 GHz bandwidth and a 4 meter synthetic aperture, respectively. The system uses a fully coherent homodyne stepped-frequency approach with a modulation scheme that produces range dependent power gain to partially offset range losses. Transmit power of 1 to 10 W is available over the entire band, and a large effective dynamic range was built into the receiver. The antennas are mounted on separate transmit and receive computer-controlled high-precision linear drives for creating the synthetic aperture. A data scan entails stepping through all the frequencies, polarizations, and antenna positions before the van is driven forward for the next scan. Preliminary data, the resulting images, and preliminary work on automatic target detection will be presented.

Paper Details

Date Published: 2 August 1999
PDF: 11 pages
Proc. SPIE 3710, Detection and Remediation Technologies for Mines and Minelike Targets IV, (2 August 1999); doi: 10.1117/12.356986
Show Author Affiliations
Joel Kositsky, SRI International (United States)
Peyman Milanfar, SRI International (United States)

Published in SPIE Proceedings Vol. 3710:
Detection and Remediation Technologies for Mines and Minelike Targets IV
Abinash C. Dubey; James F. Harvey; J. Thomas Broach; Regina E. Dugan, Editor(s)

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