Studies on Simulation Technique of Tree Single Root Imaging by Ground Penetrating Radar
Guangyou Fang · 2011
Diffraction tomography(DT) algorithm is derived for the detection and imaging of tree roots using ultra-wide band(UWB) ground penetrate radar(GPR) technique.A mathematical analysis model of the root in soil was built based on the finite difference time domain(FDTD) to obtain the GPR data.And the DT algorithm was used to reconstruct cross-sectional image of root.Limiting factors in the detection and reconstruction of roots,such as root diameter,permittivity and intervals were also discussed in the paper.The simulation results showed that,in nearly lossless homogeneous soil,UWB GPR combining with DT algorithm leaded to a rapid and accurate reconstruction of root′s position,shape and permittivity.