山岳トンネル（ICT・自動化）(1)

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[VI-991] A Study on radio wave measurement experiments such as LF band inside tunnels

*Hironobu Hatamoto¹, Koichi Aoki¹, Yoshiki Kasai¹, Shigeo Kitahara¹ (1. Kumagai Gumi Co.,Ltd.)

Keywords:

tunnel,radio measurement,Low frequency band,spectrum analyzer

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