Daily ionospheric forecasting service (DIFS) III
The daily variability of the ionosphere can greatly affect HF or SATCOM communications. HF skywave operators plan frequency schedules months in advance, however, they also require daily knowledge of the ionospheric conditions in order to modify assignments. SATCOM operators also require daily in...
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2005-12-01
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Series: | Annales Geophysicae |
Online Access: | https://www.ann-geophys.net/23/3591/2005/angeo-23-3591-2005.pdf |
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doaj-d5cd5c308d1f4b8cb3dc232067cd567d2020-11-24T23:05:09ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762005-12-01233591359810.5194/angeo-23-3591-2005Daily ionospheric forecasting service (DIFS) IIIN. Butcher0BAE SYSTEMS, Advanced Technology Centre (ATC), Great Baddow, Chelmsford, Essex, CM2 8HN, UKThe daily variability of the ionosphere can greatly affect HF or SATCOM communications. HF skywave operators plan frequency schedules months in advance, however, they also require daily knowledge of the ionospheric conditions in order to modify assignments. SATCOM operators also require daily information about the levels of scintillation, which are variations in phase, amplitude, polarisation and angle of arrival that can cause severe degradation of the received signal. <P style="line-height: 20px;"> Using a number of ionosonde measurements and geomagnetic and solar values, a Daily Ionospheric Forecasting Service (DIFS) has been developed, which provides HF and SATCOM operators with daily forecasts of predicted ionospheric conditions. The system uses in-house algorithms and an externally developed Global Ionospheric Scintillation Model (GISM) to generate HF and SATCOM forecasts. HF forecasts consist of a past summary and a forecast section, primarily displaying observed values and predicted categories for the Maximum Usable Frequency (MUF), as well as an Ionospheric Correction factor (ICF) that can be fed into the ionospheric propagation prediction tool, WinHF. SATCOM forecasts give predictions of global scintillation levels, for the polar, mid and equatorial latitude regions. Thorough analysis was carried out on DIFS and the results conclude that the service gives good accuracy, with user feedback also confirming this, as well.https://www.ann-geophys.net/23/3591/2005/angeo-23-3591-2005.pdf |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
N. Butcher |
spellingShingle |
N. Butcher Daily ionospheric forecasting service (DIFS) III Annales Geophysicae |
author_facet |
N. Butcher |
author_sort |
N. Butcher |
title |
Daily ionospheric forecasting service (DIFS) III |
title_short |
Daily ionospheric forecasting service (DIFS) III |
title_full |
Daily ionospheric forecasting service (DIFS) III |
title_fullStr |
Daily ionospheric forecasting service (DIFS) III |
title_full_unstemmed |
Daily ionospheric forecasting service (DIFS) III |
title_sort |
daily ionospheric forecasting service (difs) iii |
publisher |
Copernicus Publications |
series |
Annales Geophysicae |
issn |
0992-7689 1432-0576 |
publishDate |
2005-12-01 |
description |
The daily variability of the ionosphere can greatly affect HF or SATCOM
communications. HF skywave operators plan frequency schedules months in
advance, however, they also require daily knowledge of the ionospheric
conditions in order to modify assignments. SATCOM operators also require
daily information about the levels of scintillation, which are variations in
phase, amplitude, polarisation and angle of arrival that can cause severe
degradation of the received signal.
<P style="line-height: 20px;">
Using a number of ionosonde measurements and geomagnetic and solar values, a
Daily Ionospheric Forecasting Service (DIFS) has been developed, which
provides HF and SATCOM operators with daily forecasts of predicted
ionospheric conditions. The system uses in-house algorithms and an
externally developed Global Ionospheric Scintillation Model (GISM) to
generate HF and SATCOM forecasts. HF forecasts consist of a past summary and
a forecast section, primarily displaying observed values and predicted
categories for the Maximum Usable Frequency (MUF), as well as an Ionospheric
Correction factor (ICF) that can be fed into the ionospheric propagation
prediction tool, WinHF. SATCOM forecasts give predictions of global
scintillation levels, for the polar, mid and equatorial latitude regions.
Thorough analysis was carried out on DIFS and the results conclude that the
service gives good accuracy, with user feedback also confirming this, as
well. |
url |
https://www.ann-geophys.net/23/3591/2005/angeo-23-3591-2005.pdf |
work_keys_str_mv |
AT nbutcher dailyionosphericforecastingservicedifsiii |
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