Title :
Historical Background and Introduction to the Special Issue on Extremely Low Frequency (ELF) Communications
Author_Institution :
Univ. of Colorado/NOAA, Boulder, CO
fDate :
4/1/1974 12:00:00 AM
Keywords :
ELF communications; History; Distortion; Earth; Electromagnetic scattering; Frequency; Geophysical measurement techniques; Ground penetrating radar; Instruments; Radio transmitters; Sparks; Springs;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOM.1974.1092232