全极化探地雷达正演模拟

全极化探地雷达不但能获取当前探地雷达使用的共极化信息,而且能使用交叉极化信息,进而更好地分析目标属性.本文在时域有限差分法的基础上,构建了全极化探地雷达的正演模拟方法,通过水平正交双方向同时接收获取全极化信息.标准目标体金属板和角反射器的正演模拟与实验室物理模型测试一致的共极化和交叉极化响应信息,证实了该正演模拟方法的...

Forward modeling for full-polarimetric ground penetrating radar

Full-polarimetric ground penetrating radar (GPR) can obtain the co-polarization and cross-polarization information simultaneously, which can help to understand the target attribute better. A forward modeling algorithm for the full polarization GPR is developed using finite-difference time-domain (FDTD) method in this paper. The full polarization information is simulated by setting transmitting antenna and receiving antenna in horizontal and orthogonal directions. A metal plate and a corner reflector are used as targets. The simulation results show good coincidence to the results obtained by model experiment. Furthermore, the responses of random surface and oblique fracture are simulated, and good results are obtained. Both simulation and experiment results show that full polarization information will help us to identify target attributes such as the shape, structure, orientation and physical properties.