Study about the Properties of a Carrier-Free Pulse Ground Penetrating Radar(GPR) and Their Numerical Simulation by 2. 5D FD-TD Method
Fang Guangyou; Zhang Zhongzhi (China Research Institute of Radiowave Propagation, P. O. Box 138, Xinxiong, Henan 453003, China)Wang Winbing (Dept. of Infortnation & Control Engineering, Xi'an Jiaotong University Xi'an Shanxi, 710049 China)
The maximum detection depth and the minimum resolution are two important factors of a Ground Penetrating Radar (GPR). Tbe detectable depths and resolution are firstly analysed for the cfor-free GPR spotems. The dominant parameters influendng the properties of a GPR system are studied. The pseudo-color pictures of different buried objects are calculated by 2. 5 Dimension Finite-Difference Time - Domain (2. 5D- FDTD) method in details. The comparsion between the result calculated by 2. 5D-FDTD method and the one by our GPR sysem is made, and good agreement is obtained.