University of Hertfordshire

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  • B. S. Arora
  • J. Morgan
  • S. M. Ord
  • S. J. Tingay
  • M. Bell
  • J. R. Callingham
  • K. S. Dwarakanath
  • B. -Q. For
  • P. Hancock
  • L. Hindson
  • N. Hurley-Walker
  • M. Johnston-Hollitt
  • A. D. Kapinska
  • E. Lenc
  • B. McKinley
  • A. R. Offringa
  • P. Procopio
  • L. Staveley-Smith
  • R. B. Wayth
  • C. Wu
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  • Q. Zheng
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Original languageEnglish
JournalPublications of the Astronomical Society of Australia
Volume33
DOIs
Publication statusPublished - 13 Jul 2016

Abstract

We estimate spatial gradients in the ionosphere using the Global Positioning System (GPS) and GLONASS (Russian global navigation system) observations, utilising data from multiple GPS stations in the vicinity of Murchison Radio-astronomy Observatory (MRO). In previous work the ionosphere was characterised using a single-station to model the ionosphere as a single layer of fixed height and this was compared with ionospheric data derived from radio astronomy observations obtained from the Murchison Widefield Array (MWA). Having made improvements to our data quality (via cycle slip detection and repair) and incorporating data from the GLONASS system, we now present a multi-station approach. These two developments significantly improve our modelling of the ionosphere. We also explore the effects of a variable-height model. We conclude that modelling the small-scale features in the ionosphere that have been observed with the MWA will require a much denser network of Global Navigation Satellite System (GNSS) stations than is currently available at the MRO.

Notes

This document is the Accepted Manuscript version of a Published Work that appeared in final form in Publications of the Astronomical Society of Australia (PASA), after peer review and technical editing by the publisher. The version of record is available on line at https://doi.org/10.1017/pasa.2016.22 COPYRIGHT: © Astronomical Society of Australia 2016.

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