A Time-Delay Estimation Algorithm of GPR Recording Profile Based on Sliding Window

In this paper, a new method is proposed to extract time-delay estimating curve of Ground-penetrating radar recording profile based on sliding window. This signal processing method utilizes correlation characteristics of adjacent signals to ensure that the time-delay curve slips down orderly. Unlike traditional methods, the proposed one uses sliding window to intercept echo signal and only estimate the intercepted data. Simulation results show that the precision of the time-delay curve extracted by the proposed method is higher and the imaging results obtained by the time-delay curve are more accurate.