Three-dimensional FDTD model for GPR detection of objects buried in realistic dispersive soil

Panagiotis Kosmas; Yuequan Wang; Carey M. Rappaport

doi:10.1117/12.479104

13 August 2002 Three-dimensional FDTD model for GPR detection of objects buried in realistic dispersive soil

Panagiotis Kosmas, Yuequan Wang, Carey M. Rappaport

Proceedings Volume 4742, Detection and Remediation Technologies for Mines and Minelike Targets VII; (2002) https://doi.org/10.1117/12.479104
Event: AeroSense 2002, 2002, Orlando, FL, United States

Abstract

The use of ground penetrating radar (GPR) is one of the most popular techniques for the detection of anti-personnel mines and therefore it is desirable to accurately model such systems. For many GPR applications, FDTD models used to simulate the system are two-dimensional, because they are simple to implement and computationally inexpensive. However, a three-dimensional model is more accurate and allows complete freedom for the location of the object relative to the receivers. Instead of fully modeling the transmitter and receiver elements, and adding significant complexity, the transmitted field in this study is experimentally measured and used as the model's excitation. The model developed simulates a GPR system consisting of a parabolic reflector transmitter and a multi-static receiver array. The model is tested for both flat and rough ground with a Gaussian variation. The results are compared with experimental data and are found to be very accurate. The validation of this approach makes the model a powerful tool that can be used in different applications, where the exciting field is computationally or experimentally specified.

Citation Download Citation

Panagiotis Kosmas, Yuequan Wang, and Carey M. Rappaport "Three-dimensional FDTD model for GPR detection of objects buried in realistic dispersive soil", Proc. SPIE 4742, Detection and Remediation Technologies for Mines and Minelike Targets VII, (13 August 2002); https://doi.org/10.1117/12.479104

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