ULF wave effects on high frequency signal propagation through the ionosphere
Variations in the total electron content (TEC) of the ionosphere alter the propagation characteristics of EM radiation for frequencies above a few megahertz (MHz). Spatial and temporal variations of the ionosphere TEC influence highly sensitive, ground based spatial measurements such as those us...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2009-07-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/27/2779/2009/angeo-27-2779-2009.pdf |
| _version_ | 1818306570636754944 |
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| author | C. L. Waters S. P. Cox |
| author_facet | C. L. Waters S. P. Cox |
| author_sort | C. L. Waters |
| collection | DOAJ |
| description | Variations in the total electron content (TEC) of the ionosphere alter the
propagation characteristics of EM radiation for frequencies above a few
megahertz (MHz). Spatial and temporal variations of the ionosphere TEC
influence highly sensitive, ground based spatial measurements such as those
used in radio astronomy and Global Positioning System (GPS) applications. In
this paper we estimate the magnitudes of the changes in TEC and the time
delays of high frequency signals introduced by variations in the ionosphere
electron density caused by the natural spectrum of ultra-low frequency (ULF)
wave activity that originates in near-Earth space. The time delays and
associated phase shifts depend on the frequency, spatial structure and
amplitude of the ULF waves. |
| first_indexed | 2024-12-13T06:44:35Z |
| format | Article |
| id | doaj.art-848212a7df374084a9e13e5500bccd6f |
| institution | Directory Open Access Journal |
| issn | 0992-7689 1432-0576 |
| language | English |
| last_indexed | 2024-12-13T06:44:35Z |
| publishDate | 2009-07-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Annales Geophysicae |
| spelling | doaj.art-848212a7df374084a9e13e5500bccd6f2022-12-21T23:56:20ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762009-07-01272779278810.5194/angeo-27-2779-2009ULF wave effects on high frequency signal propagation through the ionosphereC. L. Waters0S. P. Cox1School of Mathematical and Physical Sciences, The University of Newcastle, Callaghan, 2308, New South Wales, AustraliaSchool of Mathematical and Physical Sciences, The University of Newcastle, Callaghan, 2308, New South Wales, AustraliaVariations in the total electron content (TEC) of the ionosphere alter the propagation characteristics of EM radiation for frequencies above a few megahertz (MHz). Spatial and temporal variations of the ionosphere TEC influence highly sensitive, ground based spatial measurements such as those used in radio astronomy and Global Positioning System (GPS) applications. In this paper we estimate the magnitudes of the changes in TEC and the time delays of high frequency signals introduced by variations in the ionosphere electron density caused by the natural spectrum of ultra-low frequency (ULF) wave activity that originates in near-Earth space. The time delays and associated phase shifts depend on the frequency, spatial structure and amplitude of the ULF waves.https://www.ann-geophys.net/27/2779/2009/angeo-27-2779-2009.pdf |
| spellingShingle | C. L. Waters S. P. Cox ULF wave effects on high frequency signal propagation through the ionosphere Annales Geophysicae |
| title | ULF wave effects on high frequency signal propagation through the ionosphere |
| title_full | ULF wave effects on high frequency signal propagation through the ionosphere |
| title_fullStr | ULF wave effects on high frequency signal propagation through the ionosphere |
| title_full_unstemmed | ULF wave effects on high frequency signal propagation through the ionosphere |
| title_short | ULF wave effects on high frequency signal propagation through the ionosphere |
| title_sort | ulf wave effects on high frequency signal propagation through the ionosphere |
| url | https://www.ann-geophys.net/27/2779/2009/angeo-27-2779-2009.pdf |
| work_keys_str_mv | AT clwaters ulfwaveeffectsonhighfrequencysignalpropagationthroughtheionosphere AT spcox ulfwaveeffectsonhighfrequencysignalpropagationthroughtheionosphere |