Subbanding of temporal and spatial UWB SAR imagery of buried mines

David C. Wong; Lawrence Carin

doi:10.1117/12.324240

4 September 1998 Subbanding of temporal and spatial UWB SAR imagery of buried mines

David C. Wong, Lawrence Carin

Proceedings Volume 3392, Detection and Remediation Technologies for Mines and Minelike Targets III; (1998) https://doi.org/10.1117/12.324240
Event: Aerospace/Defense Sensing and Controls, 1998, Orlando, FL, United States

Abstract

A numerical algorithm has been developed for the modeling of ultra-wideband (UWB) plane-wave scattering from a class of buried mines. In particular, the model assumes that a mine can be simulated as a body of revolution (BOR). The numerical results indicate that there are particular frequency subbands in which a given target is excited most strongly, with the subband depending strongly on the target type. Moreover, these optimal subbands are also dependent on the depression angle; therefore, the synthetic aperture radar (SAR) aperture must be limited (spatial-spectrum subbanding) so that the desired depression angle is achieved over the aperture used for imaging. These results indicate that the scattered response from particular buried mines can be highlighted by proper processing of the temporal and spatial spectrum. So motivated, we have applied subbanding to data measured by the Army Research Laboratory (ARL) UWB SAR, which collects fully polarimetric data over the 50 - 1200 MHz bandwidth. The measured data, when processed appropriately corroborate the theoretical expectations of where example anti-personnel and anti-tank mines scatter optimally. In particular, we consider the Valmara anti-personnel mine and the M20 anti-tank mine, using data collected at Yuma Proving Grounds. After validating the theory, we present frequency subbanding that will highlight one mine over another, a technique of potential application to the discrimination of targets from clutter.

Citation Download Citation

David C. Wong and Lawrence Carin "Subbanding of temporal and spatial UWB SAR imagery of buried mines", Proc. SPIE 3392, Detection and Remediation Technologies for Mines and Minelike Targets III, (4 September 1998); https://doi.org/10.1117/12.324240

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KEYWORDS

Mining

Synthetic aperture radar

Land mines

Antennas

Algorithm development

Metals

Soil science

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