Title :
Security communication in tunnels underground
Author :
Chiba, Jiro ; Murakami, Yasushi
Author_Institution :
Tohoku University
Keywords :
Attenuation; Conductors; Cutoff frequency; Disaster management; Environmental management; Equations; Fires; Radio communication; Wire; Wiring;
Conference_Titel :
Security Technology, 1989. Proceedings. 1989 International Carnahan Conference on
DOI :
10.1109/CCST.1989.751989
