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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ftdtic:ADA180819 2023-05-15T14:51:35+02:00 Ground-Wave Path Loss Over Ice-Covered Sea at Frequencies between 0.1 and 10 MHz. Kennedy,Edward J. NAVAL RESEARCH LAB WASHINGTON DC 1987-05-06 text/html http://www.dtic.mil/docs/citations/ADA180819 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA180819 en eng http://www.dtic.mil/docs/citations/ADA180819 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Radiofrequency Wave Propagation Snow Ice and Permafrost *GROUND WAVES(ELECTROMAGNETIC) *TRANSMISSION LOSS *SEA ICE ARCTIC REGIONS ATTENUATION ELECTROMAGNETIC WAVE PROPAGATION GROUND LEVEL ICE LAYERS LENGTH LOSSES MEDIUM FREQUENCY OCEANS OPEN WATER PATHS SEA WATER THICKNESS OCEAN SURFACE RADIATION ATTENUATION Ice Cover Arctic Communication PE62721N WUDN291241 Text 1987 ftdtic 2016-02-19T09:41:03Z 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. Text Arctic Ice permafrost Sea ice Defense Technical Information Center: DTIC Technical Reports database Arctic |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Radiofrequency Wave Propagation Snow Ice and Permafrost *GROUND WAVES(ELECTROMAGNETIC) *TRANSMISSION LOSS *SEA ICE ARCTIC REGIONS ATTENUATION ELECTROMAGNETIC WAVE PROPAGATION GROUND LEVEL ICE LAYERS LENGTH LOSSES MEDIUM FREQUENCY OCEANS OPEN WATER PATHS SEA WATER THICKNESS OCEAN SURFACE RADIATION ATTENUATION Ice Cover Arctic Communication PE62721N WUDN291241 |
spellingShingle |
Radiofrequency Wave Propagation Snow Ice and Permafrost *GROUND WAVES(ELECTROMAGNETIC) *TRANSMISSION LOSS *SEA ICE ARCTIC REGIONS ATTENUATION ELECTROMAGNETIC WAVE PROPAGATION GROUND LEVEL ICE LAYERS LENGTH LOSSES MEDIUM FREQUENCY OCEANS OPEN WATER PATHS SEA WATER THICKNESS OCEAN SURFACE RADIATION ATTENUATION Ice Cover Arctic Communication PE62721N WUDN291241 Kennedy,Edward J. Ground-Wave Path Loss Over Ice-Covered Sea at Frequencies between 0.1 and 10 MHz. |
topic_facet |
Radiofrequency Wave Propagation Snow Ice and Permafrost *GROUND WAVES(ELECTROMAGNETIC) *TRANSMISSION LOSS *SEA ICE ARCTIC REGIONS ATTENUATION ELECTROMAGNETIC WAVE PROPAGATION GROUND LEVEL ICE LAYERS LENGTH LOSSES MEDIUM FREQUENCY OCEANS OPEN WATER PATHS SEA WATER THICKNESS OCEAN SURFACE RADIATION ATTENUATION Ice Cover Arctic Communication PE62721N WUDN291241 |
description |
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. |
author2 |
NAVAL RESEARCH LAB WASHINGTON DC |
format |
Text |
author |
Kennedy,Edward J. |
author_facet |
Kennedy,Edward J. |
author_sort |
Kennedy,Edward J. |
title |
Ground-Wave Path Loss Over Ice-Covered Sea at Frequencies between 0.1 and 10 MHz. |
title_short |
Ground-Wave Path Loss Over Ice-Covered Sea at Frequencies between 0.1 and 10 MHz. |
title_full |
Ground-Wave Path Loss Over Ice-Covered Sea at Frequencies between 0.1 and 10 MHz. |
title_fullStr |
Ground-Wave Path Loss Over Ice-Covered Sea at Frequencies between 0.1 and 10 MHz. |
title_full_unstemmed |
Ground-Wave Path Loss Over Ice-Covered Sea at Frequencies between 0.1 and 10 MHz. |
title_sort |
ground-wave path loss over ice-covered sea at frequencies between 0.1 and 10 mhz. |
publishDate |
1987 |
url |
http://www.dtic.mil/docs/citations/ADA180819 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA180819 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice permafrost Sea ice |
genre_facet |
Arctic Ice permafrost Sea ice |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA180819 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766322716719185920 |