抄録
The results from previous research revealed that pipes and cavities differ in the frequency domain characteristics of the waves reflected from these objects as captured by ground penetrating radar. Aerial tests to investigate the characteristics of reflected waves were conducted in order to uncover the reasons for the difference in characteristics. The frequency domain characteristics of radar waves from the aerial pipes and cavities showed a close match with those from actual underground pipes and cavities. It was concluded from this results that the difference in shape of buried objects resulted in the difference in frequency domain characteristics of their reflected waves. This suggests the possibility that shape of buried objects could be recognized using frequency domain characteristics.
