Extremely Low Frequency (ELF) Ionospheric Radio Propagation Studies Using Natural Sources

Extremely Low Frequency (ELF) Ionospheric Radio Propagation Studies Using Natural Sources

The purpose of this paper is to describe methods of studying the propagation of radio waves over the earth's surface in the extremely low frequency (ELF) frequency band (3 Hz-3 kHz) using natural (as distinct from "man-made") sources of radiation. Attention is focused on the character...

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Veröffentlicht in:I.R.E. transactions on communications systems 1974-04, Vol.22 (4), p.477-484
1. Verfasser: Jones, D.
Format: Artikel
Sprache:eng
Schlagworte:
Data analysis
Electromagnetic propagation
Frequency
Geophysical measurement techniques
Ground penetrating radar
Lightning
Optical propagation
Radio propagation
Resonance
Surface waves
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Zusammenfassung:The purpose of this paper is to describe methods of studying the propagation of radio waves over the earth's surface in the extremely low frequency (ELF) frequency band (3 Hz-3 kHz) using natural (as distinct from "man-made") sources of radiation. Attention is focused on the characteristics of the radio wave field and on methods of analysis of acquired data in order to obtain information on propagation parameters of interest in Project Sanguine. Wave impedance measurements are identified as being of particular importance in these investigations.
ISSN:0090-6778
0096-2244
1558-0857
DOI:10.1109/TCOM.1974.1092214