Title :
Modeling ELF atmospheric noise
Author :
Warber, C.R. ; Field, E.C., Jr. ; Shearer, M.J.
Author_Institution :
Pacific-Sierra Res. Corp., Santa Monica, CA, USA
Abstract :
A computer program for predicting extremely low frequency (ELF, 30 to 300 Hz) radio noise is described. The authors review the characteristics of noise in this band and describe how the computer program´s predictions compare to data. The current version of the program, called LNP (long-wave noise prediction), predicts horizontally and vertically polarized noise under both ambient and disturbed conditions. In general, LNP is shown to work well at ELF. It is especially surprising that the code gives such good agreement with high latitude data down to 10 Hz, since the waveguide mode propagation approximation starts to become invalid below around 40 Hz
Keywords :
atmospherics; electromagnetic wave polarisation; modelling; radiowave propagation; telecommunication computing; 30 to 300 Hz; ELF atmospheric noise; LNP; ambient conditions; computer program; disturbed conditions; high latitude data; horizontally polarised noise; long-wave noise prediction; modeling; radio noise; vertically polarized noise; waveguide mode propagation approximation; Atmospheric modeling; Electromagnetic interference; Electromagnetic waveguides; Frequency; Geophysical measurement techniques; Ground penetrating radar; Low-frequency noise; Military computing; Noise figure; Noise level;
Conference_Titel :
Electromagnetic Compatibility, 1993. Symposium Record., 1993 IEEE International Symposium on
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-1304-6
DOI :
10.1109/ISEMC.1993.473762
