Digital HF communications for autonomous instrumentation in the polar regions
Autonomous instrumentation is used to collect scientific data in very remote locations, especially in the polar regions. Retrieving data from these instruments is often done by the use of satellite communications or by manual retrieval, the latter often requiring the use of an aircraft. This researc...
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ftleicesterunfig:oai:figshare.com:article/10105172 2023-05-15T13:43:29+02:00 Digital HF communications for autonomous instrumentation in the polar regions Michael Prior-Jones 2011-11-01T00:00:00Z https://figshare.com/articles/thesis/Digital_HF_communications_for_autonomous_instrumentation_in_the_polar_regions/10105172 unknown 2381/10065 https://figshare.com/articles/thesis/Digital_HF_communications_for_autonomous_instrumentation_in_the_polar_regions/10105172 All Rights Reserved Uncategorized IR content Text Thesis 2011 ftleicesterunfig 2021-11-11T20:08:10Z Autonomous instrumentation is used to collect scientific data in very remote locations, especially in the polar regions. Retrieving data from these instruments is often done by the use of satellite communications or by manual retrieval, the latter often requiring the use of an aircraft. This research focussed on the use of HF radio (i.e frequencies of 3-30MHz) as a cheaper technology for data communications in the polar regions and concentrated on three main areas of work: •the development of a channel simulator for high-latitude HF channels based on work by Warrington, Siddle and Stocker (2006) and using it for performance tests of existing HF modems •work on HF modem waveforms, including Polynomial Cancellation Coding OFDM (PCC-OFDM) and conventional OFDM, to try and create waveforms suitable for the more demanding high-latitude channels •an oblique propagation study using an OFDM waveform between Halley and Rothera stations in Antarctica, a 1600km sub-auroral link run for twelve months close to solar minimum. This work has shown that existing military HF modems (MIL-STD-188-110B) perform reasonably well in all but the most demanding high-latitude HF channels simulated. The oblique propagation study showed that a total annual data volume of around 400MB could be transmitted over the Halley-Rothera link, showing that HF can carry sufficient data to be useful for data retrieval. Data volumes were at their highest in the austral summer, but limited communications were possible year-round. Thesis Antarc* Antarctica University of Leicester: Figshare Austral Rothera ENVELOPE(-68.130,-68.130,-67.568,-67.568) |
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Uncategorized IR content Michael Prior-Jones Digital HF communications for autonomous instrumentation in the polar regions |
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description |
Autonomous instrumentation is used to collect scientific data in very remote locations, especially in the polar regions. Retrieving data from these instruments is often done by the use of satellite communications or by manual retrieval, the latter often requiring the use of an aircraft. This research focussed on the use of HF radio (i.e frequencies of 3-30MHz) as a cheaper technology for data communications in the polar regions and concentrated on three main areas of work: •the development of a channel simulator for high-latitude HF channels based on work by Warrington, Siddle and Stocker (2006) and using it for performance tests of existing HF modems •work on HF modem waveforms, including Polynomial Cancellation Coding OFDM (PCC-OFDM) and conventional OFDM, to try and create waveforms suitable for the more demanding high-latitude channels •an oblique propagation study using an OFDM waveform between Halley and Rothera stations in Antarctica, a 1600km sub-auroral link run for twelve months close to solar minimum. This work has shown that existing military HF modems (MIL-STD-188-110B) perform reasonably well in all but the most demanding high-latitude HF channels simulated. The oblique propagation study showed that a total annual data volume of around 400MB could be transmitted over the Halley-Rothera link, showing that HF can carry sufficient data to be useful for data retrieval. Data volumes were at their highest in the austral summer, but limited communications were possible year-round. |
format |
Thesis |
author |
Michael Prior-Jones |
author_facet |
Michael Prior-Jones |
author_sort |
Michael Prior-Jones |
title |
Digital HF communications for autonomous instrumentation in the polar regions |
title_short |
Digital HF communications for autonomous instrumentation in the polar regions |
title_full |
Digital HF communications for autonomous instrumentation in the polar regions |
title_fullStr |
Digital HF communications for autonomous instrumentation in the polar regions |
title_full_unstemmed |
Digital HF communications for autonomous instrumentation in the polar regions |
title_sort |
digital hf communications for autonomous instrumentation in the polar regions |
publishDate |
2011 |
url |
https://figshare.com/articles/thesis/Digital_HF_communications_for_autonomous_instrumentation_in_the_polar_regions/10105172 |
long_lat |
ENVELOPE(-68.130,-68.130,-67.568,-67.568) |
geographic |
Austral Rothera |
geographic_facet |
Austral Rothera |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
2381/10065 https://figshare.com/articles/thesis/Digital_HF_communications_for_autonomous_instrumentation_in_the_polar_regions/10105172 |
op_rights |
All Rights Reserved |
_version_ |
1766189617377181696 |