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On the Mechanism of Reflection of ELF-LF Radio Waves from the Lower Ionosphere
Masashi HAYAKAWA Shin SHIMAKURA
IEICE TRANSACTIONS (1976-1990)
Publication Date: 1978/01/25
Print ISSN: 0000-0000
Type of Manuscript: PAPER
Category: Antennas and Propagation
Full Text: PDF(302.9KB)>>
The mechanism of reflection of radio waves from the anisotropic lower ionosphere with exponential profile has been investigated over a wide frequency range from ELF (extremely low frequency) to LF (low frequency) by means of a full-wave method. The reflection levels deduced from the full-wave study have been compared with those which are analytically obtained from the concept of the modified refractive index for the isotropic ionosphere.