Subsurface imaging of buried objects from FDTD modeled scattered field

Author

Lei, Wentai ; Liu, Liye ; Huang, Chunlin ; Su, Yi

Author_Institution

Sch. of Electron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha, China

fYear

2004

fDate

1-4 Nov. 2004

Firstpage

516

Lastpage

520

Abstract

The ground penetrating radar (GPR) finite-difference time-domain (FDTD) simulation method and an improved back projection (BP) imaging algorithm are presented. Because of the close proximity of the elements in the GPR system, the system cannot be easily modeled by considering its individual components separately. A generalized perfectly matched layer (GPML) absorbing boundary condition (ABC) is employed to terminate the FDTD computational domain. In GPR imaging, the traditional BP algorithm is restricted by the air-soil interface and the conductivity property of the soil. An improved BP algorithm is presented. Numerical simulations and measurements using the HRGPR-01 system are provided to illustrate the performance of the GPMLABC technique. The imaging result is also shown.

Keywords

buried object detection; electromagnetic wave scattering; finite difference time-domain analysis; ground penetrating radar; radar imaging; FDTD method; GPR; absorbing boundary condition; air-soil interface; back projection imaging algorithm; buried objects; finite-difference time-domain method; generalized perfectly matched layer; ground penetrating radar; scattered field; soil conductivity; subsurface imaging; Boundary conditions; Buried object detection; Conductivity; Finite difference methods; Ground penetrating radar; Perfectly matched layers; Radar scattering; Soil; Termination of employment; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Computational Electromagnetics and Its Applications, 2004. Proceedings. ICCEA 2004. 2004 3rd International Conference on

Print_ISBN

0-7803-8562-4

Type

conf

DOI

10.1109/ICCEA.2004.1459406

Filename

1459406