• Publications
  • Influence
History, current state, and future directions of ionospheric imaging
TLDR
We present a comprehensive review of the history, current state, and future directions of ionospheric imaging. Expand
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A three-dimensional time-dependent algorithm for ionospheric imaging using GPS
Global Positioning System (GPS) satellite receivers provide a world-wide network of phase and group delay measurements. The combination of two-frequency measurements can be used to derive theExpand
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GPS scintillations and total electron content climatology in the southern low, middle and high latitude regions
In recent years, several groups have installed high-frequency sampling receivers in the southern middle and high latitude regions, to monitor ionospheric scintillations and the total electron contentExpand
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Imaging of fast moving electron-density structures in the polar cap
The imaging of fast-moving electron-density structures in the polar cap presents a unique set of challenges that are not encountered in other ionospheric imaging problems. GPS observations of totalExpand
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GPS phase scintillation associated with optical auroral emissions: First statistical results from the geographic South Pole
[1] Ionospheric irregularities affect the propagation of Global Navigation Satellite System (GNSS) signals, causing radio scintillation. Particle precipitation from the magnetosphere into theExpand
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Four-dimensional electrical capacitance tomography imaging using experimental data
TLDR
We present a robust and computationally efficient 4D image reconstruction algorithm applied to real ECT data. Expand
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Extreme space weather: impacts on engineered systems and infrastructure
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Bipolar climatology of GPS ionospheric scintillation at solar minimum
[1] High-rate sampling data of Global Navigation Satellite Systems ionospheric scintillation acquired by a network of GPS Ionospheric Scintillation and TEC Monitor receivers located in the SvalbardExpand
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The SGR-ReSI - A new generation of space GNSS receiver for remote sensing
SSTL has undertaken pioneering work in spaceborne GPS and GNSS, ranging from miniaturised space GPS receivers, to the GIOVE-A Galileo demonstrator satellite, which itself carried an experimental GEOExpand
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Imaging of electron density troughs by tomographic techniques
Troughs in the latitudinal distribution of electron density are a well-known feature of the ionosphere from subauroral to polar latitudes. The location and depth of the trough minimum, the width ofExpand
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