Title :
The Attenuation vs Frequency Characteristics of VLF Radio Waves
Author_Institution :
National Bureau of Standards, Boulder, Colo.
fDate :
6/1/1957 12:00:00 AM
Abstract :
The theoretical dependence on frequency of the attenuation of the wave guide modes in vlf propagation is discussed in some detail. It is indicated that most of the published experimental data between 1 and 30 kc was compatible with the sharply bounded model of the ionosphere with a reflecting height of about 70 km during the day and 90 km during the night.
Keywords :
Absorption; Attenuation; Conductivity; Electromagnetic propagation; Electromagnetic waveguides; Frequency; Ionosphere; Reflection; Senior members; Waveguide theory;
Journal_Title :
Proceedings of the IRE
DOI :
10.1109/JRPROC.1957.278470
