Observations of ELF Signal and Noise Variability on Northern Latitude Paths.
Extremely-low-frequency (ELF) signal and noise data from a network of receiving sites in the North Atlantic region are reported for propagation tests that were conducted in 1974 and early 1975. Statistics of the signal and noise behavior indicate that variability introduced by geophysical phenomena...
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ftdtic:ADA018086 2023-05-15T17:31:48+02:00 Observations of ELF Signal and Noise Variability on Northern Latitude Paths. Davis,John R. Meyers,William D. NAVAL RESEARCH LAB WASHINGTON D C 1975-11-11 text/html http://www.dtic.mil/docs/citations/ADA018086 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA018086 en eng http://www.dtic.mil/docs/citations/ADA018086 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Radiofrequency Wave Propagation *Extremely low frequency *Radio transmission Noise(Electrical and electromagnetic) Ionospheric propagation Radiofrequency interference Waveguides Communications networks Ionosphere Variables Magnetosphere Charged particles Text 1975 ftdtic 2016-02-19T07:29:14Z Extremely-low-frequency (ELF) signal and noise data from a network of receiving sites in the North Atlantic region are reported for propagation tests that were conducted in 1974 and early 1975. Statistics of the signal and noise behavior indicate that variability introduced by geophysical phenomena in the ionosphere are of significance and that this variability exists to some degree even under seemingly quiet conditions. A correspondence is observed between periods of unusually disturbed ELF propagation and geomagnetic activity, indicating that charged particles precipitated from the magnetosphere following solar eruptions are responsible for the propagation variability. (Author) Text North Atlantic Defense Technical Information Center: DTIC Technical Reports database |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Radiofrequency Wave Propagation *Extremely low frequency *Radio transmission Noise(Electrical and electromagnetic) Ionospheric propagation Radiofrequency interference Waveguides Communications networks Ionosphere Variables Magnetosphere Charged particles |
spellingShingle |
Radiofrequency Wave Propagation *Extremely low frequency *Radio transmission Noise(Electrical and electromagnetic) Ionospheric propagation Radiofrequency interference Waveguides Communications networks Ionosphere Variables Magnetosphere Charged particles Davis,John R. Meyers,William D. Observations of ELF Signal and Noise Variability on Northern Latitude Paths. |
topic_facet |
Radiofrequency Wave Propagation *Extremely low frequency *Radio transmission Noise(Electrical and electromagnetic) Ionospheric propagation Radiofrequency interference Waveguides Communications networks Ionosphere Variables Magnetosphere Charged particles |
description |
Extremely-low-frequency (ELF) signal and noise data from a network of receiving sites in the North Atlantic region are reported for propagation tests that were conducted in 1974 and early 1975. Statistics of the signal and noise behavior indicate that variability introduced by geophysical phenomena in the ionosphere are of significance and that this variability exists to some degree even under seemingly quiet conditions. A correspondence is observed between periods of unusually disturbed ELF propagation and geomagnetic activity, indicating that charged particles precipitated from the magnetosphere following solar eruptions are responsible for the propagation variability. (Author) |
author2 |
NAVAL RESEARCH LAB WASHINGTON D C |
format |
Text |
author |
Davis,John R. Meyers,William D. |
author_facet |
Davis,John R. Meyers,William D. |
author_sort |
Davis,John R. |
title |
Observations of ELF Signal and Noise Variability on Northern Latitude Paths. |
title_short |
Observations of ELF Signal and Noise Variability on Northern Latitude Paths. |
title_full |
Observations of ELF Signal and Noise Variability on Northern Latitude Paths. |
title_fullStr |
Observations of ELF Signal and Noise Variability on Northern Latitude Paths. |
title_full_unstemmed |
Observations of ELF Signal and Noise Variability on Northern Latitude Paths. |
title_sort |
observations of elf signal and noise variability on northern latitude paths. |
publishDate |
1975 |
url |
http://www.dtic.mil/docs/citations/ADA018086 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA018086 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA018086 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766129570005647360 |