Kim Sang Wook Kim, Se Yun 2024-01-13T00:04:32Z 2024-01-13T00:04:32Z 2021-09-29 https://pubs.kist.re.kr/handle/201004/100060 English tunnel finite-difference time domain (FDTD) Fourier transform dispersion short-time Fourier transform (STFT) signal decomposition field distribution Analysis of dispersion of pulse signals in underground tunnels using finite-difference time domain and short-time Fourier transform Conference 1 International Conference on Ground Penetrating Radar, pp.860 - 865 International Conference on Ground Penetrating Radar 860 865 IT