Identification of mine and UXO target features using computational electromagnetics

Anders J. Sullivan; Jeffrey Sichina; Lam H. Nguyen

doi:10.1117/12.445485

18 October 2001 Identification of mine and UXO target features using computational electromagnetics

Anders J. Sullivan, Jeffrey Sichina, Lam H. Nguyen

Proceedings Volume 4394, Detection and Remediation Technologies for Mines and Minelike Targets VI; (2001) https://doi.org/10.1117/12.445485
Event: Aerospace/Defense Sensing, Simulation, and Controls, 2001, Orlando, FL, United States

Abstract

Wideband (approximately 0-2000 MHz) electromagnetic scattering from mines and unexploded ordnance (UXO) is considered using a method of moments (MoM) analysis for general targets in a layered medium, with the lossy, dispersive layers representing the typical layered character of many soils. We examine wave phenomenology to identify target features that may be exploited in target detection algorithms. Accordingly, we examine the target signature in both the frequency and time domain, as well as in the SAR image domain. For this study, we restrict ourselves to a single UXO target, i.e., a 155 mm shell, an arbitrary cylindrical metal mine, and a cylindrical plastic mine (TM- 62P3 anti-tank mine). Results show that for the UXO, a strong correlation exists between the target signature in the frequency domain and the target orientation. For the rotationally symmetric mines, despite their small size, results show that these targets contain isolated scattering centers due to the wide bandwidth of the incident pulse. Further, these scattering centers can be used to deconstruct the backscattered time waveform into closely spaced simple wave objects that leads to an observable interference pattern in the frequency domain. This relatively simple scattering deconstruction lends itself well to target detection and discrimination.

Citation Download Citation

Anders J. Sullivan, Jeffrey Sichina, and Lam H. Nguyen "Identification of mine and UXO target features using computational electromagnetics", Proc. SPIE 4394, Detection and Remediation Technologies for Mines and Minelike Targets VI, (18 October 2001); https://doi.org/10.1117/12.445485

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