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Description: This effort develops a capability to detect unexploded ordnance using a ground penetrating radar to achieve reduction of false detection and increase of performance. GPR can locate buried objects by transmitting radio frequency energy into the earth and observing the returns. Anomalies or voids cause partial reflections to the incident wave and by applying advanced signal processing; the buried object can be detected, and at times, imaged. Since GPR is the one technology that can operate from some distance above the ground, it is most compatible with remotely piloted vehicles that can survey large tracts of land in an automated fashion. The Pacific Missile Range Facility (PMRF) is being analyzed for testing in a controlled environment and demonstration of this capability. The Big Island (Waimea/Puuukapu region) of Hawaii, which possesses a remnant of buried ordnance, is also being analyzed for testing and demonstration of capability. One of the technical difficulties facing an airborne GPR, Synthetic Aperture Radar (SAR), or surveillance radar is obtaining sufficient power output. Particularly for GPRs and SARs, transmitters must cover multiple octaves of frequency space (e.g., 100-1000 MHz), which is a tremendous challenge. A challenge of ground mapping radars has been the ability to see through foliage. In order to see through foliage, Synthetic Aperture Radars (SARs) must operate at low frequencies (below 1 GHz) and must operate over a broad frequency range (multi-octave capability). The hardware requirements and challenges of an airborne GPR are identical to that of a Foliage Penetrating (FOPEN) SAR system. Once suitable hardware and data link requirements are met for an airborne GPR system, a FOPEN mode can be added, providing both ground penetrating and ground mapping modes. Environmental remediation for cleaning up ranges around the Hawaiian Islands has been one of the areas of interest for testing sites for the Navy.
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| Research Center University of Hawaii |
$4,000 |
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Private Educational Institution |
Honolulu,
HI
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Citation
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Source:
Appropriations Report Language - Conference
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Reference:
108-622
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Location:
Line 54, Page 296
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Citation Excerpt: Unexploded Ordnance Detection Airborne Ground Penetrating Radar (GPR)
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