| Presentation | 2018-01-25 Under Seawater Prospecting using Ground Penetrating Radar and Analysis of Electromagnetic Wave Propagation in Seawater using FDTD Method with GPU Jun Sonoda, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The electromagnetic wave (EM) do not propagate in the seawater because of high conductivity. In recent, the ultrasonic wave is widely used in the sea, such as the fish-finder, the side-scan sonar, and so on. We have used the ground penetrating radar (GPR) by several hundred MHz to search missing persons and rubbers in the sea after the tsunami caused by the Great East Japan earthquake. In this study, we have studied the under seawater prospecting using 350/400 MHz GPR in Hiroura Bay, Natori city, in Isohama fisher port, and off the coast of Sakamoto, Yamamoto town, Miyagi prefecture. At first, frequency characteristics of complex permittivity of several seawater samples by the time domain reflectometry (TDR), and conductivity in the depth of seawater by the conductivity temperature depth profiler (CTD) have been shown. Also, it is shown that the reflected wave from several objects at the about 10 meters depth has been observed using the 350 MHz GPR. Finally, the EM wave propagation in the seawater has been analyzed using the FDTD method with the graphics processing unit (GPU). |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Ground penetrating radar / EM wave propagation in seawater / FDTD / TDR / CTD / GPU |
| Paper # | SANE2017-93 |
| Date of Issue | 2018-01-18 (SANE) |
| Conference Information | |
| Committee | SANE |
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| Conference Date | 2018/1/25(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Nagasaki Prefectural Art Museum |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Positioning, navigation, Radar and general |
| Chair | Sonosuke Fukushima(ENRI) |
| Vice Chair | Toshifumi Moriyama(Nagasaki Univ.) / Akitsugu Nadai(NICT) |
| Secretary | Toshifumi Moriyama(Mitsubishi Electric) / Akitsugu Nadai(ENRI) |
| Assistant | Manabu Akita(Univ. of Electro-Comm.) / Ryo Natsuaki(Univ. of Tokyo) |
| Paper Information | |
| Registration To | Technical Committee on Space, Aeronautical and Navigational Electronics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Under Seawater Prospecting using Ground Penetrating Radar and Analysis of Electromagnetic Wave Propagation in Seawater using FDTD Method with GPU |
| Sub Title (in English) | |
| Keyword(1) | Ground penetrating radar |
| Keyword(2) | EM wave propagation in seawater |
| Keyword(3) | FDTD |
| Keyword(4) | TDR |
| Keyword(5) | CTD |
| Keyword(6) | GPU |
| 1st Author's Name | Jun Sonoda |
| 1st Author's Affiliation | National Institute of Technology, Sendai College(NIT, Sendai) |
| Date | 2018-01-25 |
| Paper # | SANE2017-93 |
| Volume (vol) | vol.117 |
| Number (no) | SANE-403 |
| Page | pp.pp.41-46(SANE), |
| #Pages | 6 |
| Date of Issue | 2018-01-18 (SANE) |