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Excitation of UHF radio waves in tunnels

✍ Scribed by Y. P. Zhang; G. X. Zheng; J. H. Sheng

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
122 KB
Volume
22
Category
Article
ISSN
0895-2477

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✦ Synopsis

This letter deals with the excitation of UHF radio wa¨es in tunnels. It is found that the antenna position and the antenna gain are two major factors that affect the excitation of radio wa¨es in tunnels. The antenna in the middle position and with high gain is preferable. Furthermore, the enhancement of the radio signal le¨els in the NLOS region of the tunnel by a passi¨e reflector is simulated.

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