Abstract:The fields of 10-kHz radio waves propagating into and through the lower ionosphere are calculated by numerical methods, and the attenuation, polarization, and power flow characteristics are examined as a function of height for daytime and nighttime ionospheric electron density profiles with varying angles of incidence, directions of propagation relative to the earth's magnetic iield, and dip angle. The conclusions are that virtually all the attenuation of the wave occurs in the lower D region of the ionosphere… Show more
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