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| Presentation | 2018-01-18 14:00 Effect of the Object Inside a Tunnel in the Radio Wave Propagation of a Subway Tunnel Satoshi Nishida (Tokyo Tech/Kyosan), Jun-ich Takada (Tokyo Tech), Gilbert Siy Ching, Yukiko Kishiki (KKE)  AP2017-157 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Radio wave propagation measurements were taken inside a subway tunnel. One measurement was taken immediately after the tunnel's construction and another after the start of commercial operations. These two measurements were performed at the same location. For the second measurement, various installations required for train operation were fixed to the subway tunnel wall. These installations were not present for the first measurement; thus, we compared the measurement results between two time points to examine the effects of the installations on the reflection of radio waves on the tunnel wall. Immediately after the tunnel's construction and after the start of commercial operations, the attenuation constant in the non line-of-sight section are 0.03 dB/m and 0.65 dB/m, respectively. In addition, attenuation constants in the 2.4 GHz band and the 5 GHz band, using an omnidirectional antenna and a directional antenna for each tunnel section, are also shown. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Railway signaling / Train control / On-site test / Tunnel propagation / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 117, no. 382, AP2017-157, pp. 37-42, Jan. 2018. | |
| Paper # | AP2017-157 | |
| Date of Issue | 2018-01-11 (AP) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | AP2017-157 |
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| Conference Information | |
| Committee | AP WPT |
| Conference Date | 2018-01-18 - 2018-01-19 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | ATR |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Wireless transmission technology, Radio propagation, Antennas and Propagation |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2018-01-AP-WPT |
| Language | English (Japanese title is available) |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Effect of the Object Inside a Tunnel in the Radio Wave Propagation of a Subway Tunnel |
| Sub Title (in English) | |
| Keyword(1) | Railway signaling |
| Keyword(2) | Train control |
| Keyword(3) | On-site test |
| Keyword(4) | Tunnel propagation |
| Keyword(5) | |
| Keyword(6) | |
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| Keyword(8) | |
| 1st Author's Name | Satoshi Nishida |
| 1st Author's Affiliation | Tokyo Institute of Technology/Kyosan Electric Manufacturing Co., Ltd. (Tokyo Tech/Kyosan) |
| 2nd Author's Name | Jun-ich Takada |
| 2nd Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
| 3rd Author's Name | Gilbert Siy Ching |
| 3rd Author's Affiliation | Kozo Keikaku Engineering Inc. (KKE) |
| 4th Author's Name | Yukiko Kishiki |
| 4th Author's Affiliation | Kozo Keikaku Engineering Inc. (KKE) |
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| Speaker | Author-1 |
| Date Time | 2018-01-18 14:00:00 |
| Presentation Time | 20 minutes |
| Registration for | AP |
| Paper # | AP2017-157 |
| Volume (vol) | vol.117 |
| Number (no) | no.382 |
| Page | pp.37-42 |
| #Pages | 6 |
| Date of Issue | 2018-01-11 (AP) |
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