Abstract: It is necessary to amplify the area of the targets of interest in ground penetrating radar (GPR) while restraining background for artificial recognition. The paper presentes an algorithm for automatically interpolating in the area of targets of interest, which is based on twice statistics to automatically detect the transverse position of the targets of interest in GPR with the echoes of the target separated. The detected echoes of the target are preprocessed by the damond template. In turn, the method of statistics is used to determine the depth of the target. The area of targets of interest is enhanced by the correlation. Finally, the target is amplified by bilinear interpolation while the background is restrained. The different model is selected in a different application so that it not only realizes detection of targets of interest but also automatically enhances targets. Moreover, the algorithm is benefitial to locating and recognizing the buried targets. Te results of test by raw data show that the method is well adaptive and reliable.

Key words: interpolation algorithm, interesting targets, ground penetrating radar