Short-Time Fourier Transform of Deeply Located Tunnel Signatures Measured by Cross-Borehole Pulse Radar

Author

Kim, Sang-Wook ; Kim, Se-Yun ; Nam, Sangwook

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., Seoul, South Korea

Volume

8

Issue

3

fYear

2011

fDate

5/1/2011 12:00:00 AM

Firstpage

493

Lastpage

496

Abstract

The pulse signatures of a deeply located dormant tunnel are measured by operating cross-borehole short-pulse radar in a well-suited tunnel test site in Korea. The relatively fast arrival of the first peak at depth of the empty tunnel, as indicated by data analysis, may play a key role in detecting the tunnel´s precise location. Following short-time Fourier transform (STFT) of the data, the arrival time of the first peak is shown to be faster and more distinctive than that without STFTThe pulse signatures of a deeply located dormant tunnel are measured by operating cross-borehole short-pulse radar in a well-suited tunnel test site in Korea. The relatively fast arrival of the first peak at depth of the empty tunnel, as indicated by data analysis, may play a key role in detecting the tunnel´s precise location. Following short-time Fourier transform (STFT) of the data, the arrival time of the first peak is shown to be faster and more distinctive than that without STFT if the observation frequency is properly selected. if the observation frequency is properly selected.

Keywords

Fourier transforms; data analysis; geophysical prospecting; tunnels; Korea; cross-borehole pulse radar; data analysis; deeply pulse located dormant tunnel; short-time Fourier transform; tunnel test site; Attenuation; Data mining; Fourier transforms; Pulse measurements; Radar measurements; Time domain analysis; Air cavity; cross-hole radar; pulse radar; short-time Fourier transform (STFT); underground tunnel;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing Letters, IEEE

Publisher

ieee

ISSN

1545-598X

Type

jour

DOI

10.1109/LGRS.2010.2089039

Filename

5648727