Recently, scientific methods such as acoustical survey or ground radar, have been used in the survey of buried remnants. Archaeological cultural property is often buried at a shallow depth of about 1 to 5 m. In the configuration presented here, we receive various waves, such as the direct wave along the surface, longitudinal wave and transverse wave, at almost the same time. In this paper, we propose a processing technique using the wavelet transform to separate the desired signal. From a survey experiment at the test site, it was found that this processing technique is useful for the reconstruction of underground images for archaeological investigations.
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