Research on Range Profile Target Detection Algorithm of Stepped-Frequency Ground Penetrating Radar

Stepped-frequency ground penetrating radar (SFGPR) is a non-destructive detection method that transmits continuous waves to the target through the antenna and receives the echo through the antenna after reflection and refraction. After data processing, the position of the underground target and the distribution of the medium inside the target can be determined. Therefore, it is crucial to accurately determine the location of the target. In this paper, after smoothing, threshold setting and target wave peak judgment of the one-dimensional range profile of the SFGPR, a more accurate peak can be detected by using the weighted average method. The algorithm can not only make up for the shortcomings of strict waveform requirements in Gaussian fitting but also be simple to understand and more accurate in peak localization compared with Gaussian fitting peak search.