Title :
Some notes on ELF Earth-ionosphere waveguide daytime propagation parameters
Author :
Bannister, Peter R.
Author_Institution :
Naval Underwater Systems Center, New London, CT, USA
fDate :
9/1/1979 12:00:00 AM
Abstract :
The transverse-electromagnetic (TEM) propagation constants for extremely low frequency (ELF) daytime propagation in the earth-ionosphere waveguide have been calculated for frequencies of 5-2000 Hz. The recently developed theory of Greifinger and Greifinger and the Wait very low frequency (VLF) exponential ionospheric-conductivity profile have been used in the analysis. It is shown that the resulting values of ELF attenuation rate, phase velocity, and ionospheric-reflection height are in excellent agreement with the measured data.
Keywords :
Earth-ionosphere waveguide; Attenuation measurement; Conductivity; Eigenvalues and eigenfunctions; Frequency; Geophysical measurement techniques; Ground penetrating radar; Magnetic field measurement; Reflection; Velocity measurement; Waveguide theory;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.1979.1142146
