Ground-Wave Path Loss Over Ice-Covered Sea at Frequencies between 0.1 and 10 MHz

The ground-wave attenuation function has been studied for an involving propagation over an ice-covered sea surface. A review of the techniques that can be used in the analysis of a multilayer ground is presented, and a number of practical sea-ice paths are evaluated numerically. Results are presente...

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Bibliographic Details
Main Author: Kennedy, Edward J
Format: Report
Language:English
Subjects:
ARCTIC COMMUNICATION
ARCTIC REGIONS
ATTENUATION
ELECTROMAGNETIC WAVE PROPAGATION
GROUND LEVEL
GROUND WAVES(ELECTROMAGNETIC)
ICE
ICE COVER
LAYERS
LENGTH
LOSSES
MEDIUM FREQUENCY
OCEAN SURFACE
OCEANS
OPEN WATER
PATHS
PE62721NXB
RADIATION ATTENUATION
Radiofrequency Wave Propagation
SEA ICE
SEA WATER
Snow, Ice and Permafrost
THICKNESS
TRANSMISSION LOSS
WUDN291241
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Summary:The ground-wave attenuation function has been studied for an involving propagation over an ice-covered sea surface. A review of the techniques that can be used in the analysis of a multilayer ground is presented, and a number of practical sea-ice paths are evaluated numerically. Results are presented for the 0.1 to 10 MHz frequency range and consist of curves showing propagation loss as a function of distance for various ice thicknesses. It is shown that the variation of the attenuation function with distance and with frequency is significantly different than for the open ocean case. A range of frequencies over which path loss is predicted to be less than for seawater only is dependent on the path length and is shown to lie in the medium frequency range. Keywords: Ground waves(Electromagnetic); Arctic communication; Electromagnetic propagation over ice.