论文信息 - Comments on the hybrid model for propagation loss prediction in tunnels

Comments on the hybrid model for propagation loss prediction in tunnels

The hybrid model for propagation-loss prediction in tunnels is discussed and its limitations are given. The values from the waveguide model with /spl gamma//sub 2/<2 are applicable for only short distances and for tunnels with low specific attenuation factor (/spl alpha/). In general, /spl gamma//sub 2/ can take any value higher than two.

Bazil Taha Ahmed | Miguel Calvo Ramón | L. de Haro Ariet

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