Subsurface imaging of buried objects from FDTD modeled scattered field

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 componen...

Full description

Saved in:
Bibliographic Details
Main Authors: Wentai Lei, Liye Liu, Chunlin Huang, Yi Su
Format: Conference Proceeding
Language:English
Subjects:
Boundary conditions
Buried object detection
Conductivity
Finite difference methods
Ground penetrating radar
Perfectly matched layers
Radar scattering
Soil
Termination of employment
Time domain analysis
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
DOI:10.1109/ICCEA.2004.1459406