Positioning of Ground Penetrating Radar Assisted by Transmission Tower Response Signal

When using ground penetrating radar (GPR) to inspect power transmission lines, reflections from transmission towers often interfere with the target signals. Common positioning methods include real-time kinematic (RTK), measuring tapes and distance wheels. However, RTK is expensive and complex to operate. The latter two methods are low-cost but may fail or become inaccurate on rough terrain. This study proposes a new method to locate subsurface anomalies directly from GPR signals. By identifying both the tower reflection and the anomaly signal in the same trace, the position of the anomaly can be determined. To suppress the unwanted reflections from towers, we apply the Stolt migration technique. This method has been validated in the simulated model and its ability has been confirmed.