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• Article

  A 12 year comparison of MIDAS and IRI 2007 ionospheric Total Electron Content

  Chartier, A. T., Mitchell, C. N. & Jackson, D. R., 1 May 2012, In: Advances in Space Research. 49, 9, p. 1348-1355 8 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Ionosphere
  • total electron content
  • ionospherics
  • ionospheres
  • Electrons
  17 Citations (Scopus)

  148 Downloads (Pure)

• A comparison of the relative effect of the Earth’s Quasi-D.C. and A.C. electric field on Gradient Drift Waves in large-scale plasma structures in the polar regions

  Astin, I., Mitchell, C. & Burston, R., 20 Aug 2016, In: Journal of Geophysical Research: Space Physics.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • polar regions
  • alternating current
  • direct current
  • gradients
  • electric fields
  119 Downloads (Pure)

• A motion-compensated cone-beam CT using electrical impedance tomography imaging

  Pengpan, T., Smith, N. D., Qiu, W., Yao, A., Mitchell, C. N. & Soleimani, M., Jan 2011, In: Physiological Measurement. 32, 1, p. 19-34

  Research output: Contribution to journal › Article › peer-review

  • Electric Impedance
  • Tomography
  • Cones
  • Cone-Beam Computed Tomography
  • Imaging techniques
  7 Citations (Scopus)

• A multiresolution inversion for imaging the ionosphere

  Yin, P., Zheng, Y. N., Mitchell, C. N. & Li, B., 7 Jun 2017, In: Journal of Geophysical Research: Space Physics. 122, 6, p. 6799-6811 13 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Ionosphere
  • ionospheres
  • ionosphere
  • ionospherics
  • image analysis
  7 Citations (Scopus)

• Analysis of diurnal double maxima observed above Italy during 1975–1991

  Katamzi, Z. T., Smith, N. D., Mitchell, C. N. & Spalla, P., 1 Nov 2012, In: Journal of Atmospheric and Solar-Terrestrial Physics. 89, p. 67-75

  Research output: Contribution to journal › Article › peer-review

  • Italy
  • total electron content
  • F region
  • geomagnetic storm
  • summer
  1 Citation (Scopus)

• A realistic simulation framework to evaluate ionospheric tomography

  Bruno, J., Mitchell, C. N., Bolmgren, K. H. A. & Witvliet, B. A., 1 Feb 2020, In: Advances in Space Research. 65, 3, p. 891-901 11 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Carrier concentration
  • ionospherics
  • electron density
  • Ionosphere
  • Tomography
  3 Citations (Scopus)

  24 Downloads (Pure)

• A study of L-band scintillations and total electron content at an equatorial station, Lagos, Nigeria

  Adewale, A. O., Oyeyemi, E. O., Adeloye, A. B., Mitchell, C. N., Rose, J. A. R. & Cilliers, P. J., 7 Apr 2012, In: Radio Science. 47, RS2011, RS004846.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Nigeria
  • Scintillation
  • total electron content
  • ultrahigh frequencies
  • Electrons
  18 Citations (Scopus)

  184 Downloads (Pure)

• Bipolar climatology of GPS ionospheric scintillation at solar minimum

  Alfonsi, L., Spogli, L., De Franceschi, G., Romano, V., Aquino, M., Dodson, A. & Mitchell, C. N., 2011, In: Radio Science. 46, Rs0d05.

  Research output: Contribution to journal › Article › peer-review

  • climatology
  • Climatology
  • Scintillation
  • ionospherics
  • scintillation
  85 Citations (Scopus)

• Demonstration of the use of the Doppler Orbitography and Radio positioning Integrated by Satellite (DORIS) measurements to validate GPS ionospheric imaging

  Yin, P. & Mitchell, C. N., 3 Aug 2011, In: Advances in Space Research. 48, 3, p. 500-506 7 p.

  Research output: Contribution to journal › Article › peer-review

  • ionospherics
  • positioning
  • radio
  • Global positioning system
  • Demonstrations
  4 Citations (Scopus)

• Development of Low-Cost Spaceborne Multi-Frequency GNSS Receiver for Navigation and GNSS Remote Sensing

  Unwin, M., Gao, S., de Vos van Steenwijk, R., Jales, P., Maqsood, M., Gommenginger, C., Rose, J., Mitchell, C. & Partington, K., 2012, In: International Journal of Space Science and Engineering.

  Research output: Contribution to journal › Article › peer-review

• Further observations of GPS satellite oscillator anomalies mimicking ionospheric phase scintillation

  Benton, C. J. & Mitchell, C. N., Jul 2014, In: GPS Solutions. 18, 3, p. 387-391 5 p.

  Research output: Contribution to journal › Article › peer-review

  • GPS
  • anomaly
  • ruling
  • alarm
  • plasma
  9 Citations (Scopus)

• GPS loss of lock statistics over Brazil during the 24th solar cycle

  Damaceno, J. G., Bolmgren, K., Bruno, J., De Franceschi, G., Mitchell, C. & Cafaro, M., 9 Apr 2020, In: Advances in Space Research.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Brazil
  • solar cycles
  • solar cycle
  • Global positioning system
  • GPS

• GPS phase scintillation at high latitudes during geomagnetic storms of 7-17 March 2012 - Part 2: Interhemispheric comparison

  Prikryl, P., Ghoddousi-Fard, R., Spogli, L., Mitchell, C. N., Li, G., Ning, B., Cilliers, P. J., Sreeja, V., Aquino, M., Terkildsen, M., Jayachandran, P. T., Jiao, Y., Morton, Y. T., Ruohoniemi, J. M., Thomas, E. G., Zhang, Y., Weatherwax, A. T., Alfonsi, L., De Franceschi, G. & Romano, V., 2 Jun 2015, In: Annales Geophysicae. 33, 6, p. 657-670 14 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • magnetic storms
  • geomagnetic storm
  • polar regions
  • scintillation
  • ionospherics
  12 Citations (Scopus)

• GPS satellite oscillator faults mimicking ionospheric phase scintillation

  Benton, C. & Mitchell, C., Oct 2012, In: GPS Solutions. 16, 4, p. 477-482 6 p.

  Research output: Contribution to journal › Article › peer-review

  • GPS
  • effect
  8 Citations (Scopus)

• GPS scintillation and TEC gradients at equatorial latitudes in April 2006

  Alfonsi, L., Spogli, L., Tong, J. R., De Franceschi, G., Romano, V., Bourdillon, A., Huy, M. L. & Mitchell, C. N., 17 May 2011, In: Advances in Space Research. 47, 10, p. 1750-1757 8 p.

  Research output: Contribution to journal › Article › peer-review

  • Scintillation
  • total electron content
  • ionospherics
  • Electrons
  • scintillation
  31 Citations (Scopus)

• GPS tomography in the polar cap: comparison with ionosondes and in situ spacecraft data

  Pokhotelov, D., Jayachandran, P. T., Mitchell, C. N., MacDougall, J. W. & Denton, M. H., Jan 2011, In: GPS Solutions. 15, 1, p. 79-87 9 p.

  Research output: Contribution to journal › Article › peer-review

  • spacecraft
  • tomography
  • GPS
  • dimethylsulfoniopropionate
  • plasma
  12 Citations (Scopus)

• Identification of scintillation signatures on GPS signals originating from plasma structures detected with EISCAT incoherent scatter radar along the same line of sight

  Forte, B., Coleman, C., Skone, S., Häggström, I., Mitchell, C., Da Dalt, F., Panicciari, T., Kinrade, J. & Bust, G., 31 Jan 2017, In: Journal of Geophysical Research: Space Physics. 122, 1, p. 916-931 16 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • incoherent scatter radar
  • line of sight
  • scintillation
  • signatures
  • navigation
  15 Citations (Scopus)

• Imaging of 3-D plasmaspheric electron density using GPS to LEO satellite differential phase observations

  Spencer, P. S. J. & Mitchell, C. N., Jun 2011, In: Radio Science. 46, 3, 6 p., RS0D04.

  Research output: Contribution to journal › Article › peer-review

  File

  • plasmasphere
  • Carrier concentration
  • low Earth orbits
  • electron density
  • Orbits
  12 Citations (Scopus)

  140 Downloads (Pure)

• Imaging the topside-ionosphere and plasmasphere with ionospheric tomography using COSMIC GPS TEC: plasmaspheric imaging with tomography

  Pinto Jayawardena, T. S., Chartier, A. T., Spencer, P. & Mitchell, C. N., Jan 2016, In: Journal of Geophysical Research: Space Physics. 121, 1, p. 817-831

  Research output: Contribution to journal › Article › peer-review

  Open Access
  9 Citations (Scopus)

• Improving the vertical electron density profile in ionospheric imaging at storm time: A case study on 25-27 September 2011

  Yin, P. & Mitchell, C. N., 8 Sep 2014, In: Journal of Geophysical Research: Space Physics. 119, 9, p. 7963-7971 9 p.

  Research output: Contribution to journal › Article › peer-review

  • COSMIC
  • electron density
  • radio
  • geomagnetic storm
  • extreme event
  4 Citations (Scopus)

• Ionospheric corrections for GPS time transfer

  Rose, J. A. R., Watson, R. J., Allain, D. J. & Mitchell, C. N., 20 Mar 2014, In: Radio Science. 49, 3, p. 196-206 11 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Global Positioning System
  • ionospherics
  • Global positioning system
  • GPS
  • Tomography
  10 Citations (Scopus)

• Ionospheric data assimilation and forecasting during storms

  Chartier, A. T., Matsuo, T., Anderson, J. L., Collins, N., Hoar, T. J., Lu, G., Mitchell, C. N., Coster, A. J., Paxton, L. J. & Bust, G. S., 18 Feb 2016, In: Journal of Geophysical Research: Space Physics. 121, 1, p. 764-778 15 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • data assimilation
  • forecasting
  • total electron content
  • electrodynamics
  • thermosphere
  23 Citations (Scopus)

  220 Downloads (Pure)

• Ionospheric data assimilation applied to HF geolocation in the presence of traveling ionospheric disturbances

  Mitchell, C. N., Rankov, N. R., Bust, G. S., Miller, E., Gaussiran, T., Calfas, R., Doyle, J. D., Teig, L. J., Werth, J. L. & Dekine, I., 1 Jul 2017, In: Radio Science. 52, 7, p. 829-840 12 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • traveling ionospheric disturbances
  • assimilation
  • ionospherics
  • Ionospheric measurement
  • data assimilation
  5 Citations (Scopus)

• Ionospheric imaging in Africa

  Chartier, A. T., Kinrade, J., Mitchell, C. N., Rose, J. A. R., Jackson, D. R., Cilliers, P., Habarulema, J-B., Katamzi, Z., McKinnell, L-A., Matamba, T., Opperman, B., Ssessanga, N., Giday, N. M., Tyalimpi, V., De Franceschi, G., Romano, V., Scotto, C., Notarpietro, R., Dovis, F., Avenant, E. & 11 others, Wonnacott, R., Oyeyemi, E., Mahrous, A., Tsidu, G. M., Lekamisy, H., Olwendo, J. O., Sibanda, P., Gogie, T. K., Rabiu, B., De Jong, K. & Adewale, A., 8 Jan 2014, In: Radio Science. 49, 1, p. 19-27 9 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Global Positioning System
  • ionospherics
  • Global positioning system
  • GPS
  • Imaging techniques
  8 Citations (Scopus)

  81 Downloads (Pure)

• Ionospheric scintillation over Antarctica during the storm of 5–6 April 2010

  Kinrade, J., Mitchell, C. N., Yin, P., Smith, N., Jarvis, M. J., Maxfield, D. J., Rose, M. C., Bust, G. S. & Weatherwax, A. T., May 2012, In: Journal of Geophysical Research. 117, A5, A05304.

  Research output: Contribution to journal › Article › peer-review

  File

  • Antarctic regions
  • Scintillation
  • Antarctica
  • ionospherics
  • scintillation
  37 Citations (Scopus)

  138 Downloads (Pure)

• Isolating the multipath component in GNSS signal-to-noise data and locating reflecting objects

  Benton, C. & Mitchell, C. N., 2011, In: Radio Science. 46, RS6002.

  Research output: Contribution to journal › Article › peer-review

  File

  • satellite navigation systems
  • Signal systems
  • GNSS
  • Satellites
  • Navigation
  24 Citations (Scopus)

  160 Downloads (Pure)

• Method to measure the Stokes parameters of GPS signals

  Benton, C. J. & Mitchell, C. N., 1 Jan 2014, In: Radio Science. 49, 1, p. 7-18 12 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Global Positioning System
  • Global positioning system
  • GPS
  • receivers
  • Circular polarization
  1 Citation (Scopus)

  38 Downloads (Pure)

• New method for tracking the movement of ionospheric plasma

  Benton, C. & Mitchell, C., 2012, In: Journal of Geophysical Research. 117, 9, A09317.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • ionospherics
  • Plasmas
  • plasma generators
  • plasma
  • Earth ionosphere
  2 Citations (Scopus)

  150 Downloads (Pure)

• Optimizing geophysical muon radiography using information theory

  Benton, C. J., Mitchell, C. N., Coleman, M., Paling, S. M., Lincoln, D. L., Thompson, L., Clark, S. J. & Gluyas, J. G., 29 Feb 2020, In: Geophysical Journal International. 220, 2, p. 1078-1094 17 p.

  Research output: Contribution to journal › Article › peer-review

  • Radiography
  • radiography
  • information theory
  • Information theory
  • muons

• Polar-cap plasma patch primary linear instability growth-rates compared

  Burston, R., Mitchell, C. & Astin, I., Apr 2016, In: Journal of Geophysical Research: Space Physics. 121, 4, p. 3439-3451

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • polar caps
  • turbulence
  • Dynamics Explorer 2 satellite
  • gradients
  • scintillation
  8 Citations (Scopus)

  149 Downloads (Pure)

• Quality analysis of dual-frequency smartphone-based ionospheric TEC measurements: what can be achieved?

  Bruno, J., Darugna, F., Bolmgren, K., Wübbena, J., Mitchell, C. & Schmitz, M., 2020, In: Annals of Geophysics. 63, 0, p. 07 1 p., AC07.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • total electron content
  • GNSS
  • antenna
  • analysis
  • atmospheric monitoring

• Rapid and Accurate Measurement of Polarization and Fading of Weak VHF Signals Obliquely Reflected from Sporadic-E Layers

  Deacon, C., Witvliet, B. A., Mitchell, C. & Steendam, S., 6 Nov 2020, (Acceptance date) In: IEEE Transactions on Antennas and Propagation. 16 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File
  104 Downloads (Pure)

• Satellite-beacon Ionospheric-scintillation Global Model of the upper Atmosphere (SIGMA) II: inverse modeling with high latitude observations to deduce irregularity physics

  Deshpande, K. D., Bust, G. S., Clauer, C. R., Scales, W. A., Frissell, N. A., Ruohoniemi, J. M., Spogli, L., Mitchell, C. & Weatherwax, A. T., 28 Sep 2016, In: Journal of Geophysical Research: Space Physics. 121, 9, p. 9188-9023

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Scintillation
  • Upper atmosphere
  • Physics
  • Satellites
  • Navigation
  26 Citations (Scopus)

  309 Downloads (Pure)

• Sensing the earth with the SGR-ReSI multi-antenna space GPS/GNSS receiver

  Unwin, M., De Vos Van Steenwijk, R., Brenchley, M., Gommenginger, C., Mitchell, C. & Gao, S., 2011, In: Advances in the Astronautical Sciences. 141, p. 735-744 10 p.

  Research output: Contribution to journal › Article

  • remote sensing
  • GNSS
  • Remote sensing
  • antenna
  • antennas

• Statistical analysis of travelling ionospheric disturbances using TEC observations from geostationary satellites

  Katamzi, Z. T., Smith, N. D., Mitchell, C. N., Spalla, P. & Materassi, M., Jan 2011, In: Journal of Atmospheric and Solar-Terrestrial Physics. 74, p. 64-80

  Research output: Contribution to journal › Article › peer-review

  • traveling ionospheric disturbances
  • synchronous satellites
  • geostationary satellite
  • total electron content
  • ionospheres
  21 Citations (Scopus)

• System design for geosynchronous synthetic aperture radar missions

  Hobbs, S., Mitchell, C., Forte, B., Holley, R., Snapir, B. & Whittaker, P., 8 May 2014, In: IEEE Transactions on Geoscience and Remote Sensing. 52, 12, p. 7750-7763 14 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Synthetic aperture radar
  • synthetic aperture radar
  • Systems analysis
  • spatial resolution
  • Compensation and Redress
  98 Citations (Scopus)

  228 Downloads (Pure)

• The use of ionosondes in GPS ionospheric tomography at low latitudes

  Chartier, A. T., Smith, N. D., Mitchell, C. N., Jackson, D. R. & Patilongo, P. J. C., Oct 2012, In: Journal of Geophysical Research. 117, A10, A10326.

  Research output: Contribution to journal › Article › peer-review

  • ionosondes
  • tomography
  • tropical regions
  • total electron content
  • ionospherics
  14 Citations (Scopus)

• The use of ionospheric tomography and elevation masks to reduce the overall error in single-frequency GPS timing applications

  Rose, J. A. R., Tong, J. R., Allain, D. J. & Mitchell, C. N., 15 Jan 2011, In: Advances in Space Research. 47, 2, p. 276-288 13 p.

  Research output: Contribution to journal › Article › peer-review

  File

  • Global Positioning System
  • ionospherics
  • Tomography
  • Masks
  • Global positioning system
  7 Citations (Scopus)

  160 Downloads (Pure)

• Three‐dimensional modeling of high‐latitude scintillation observations

  Chartier, A., Forte, B., Deshpande, K., Bust, G. S. & Mitchell, C., 15 Jul 2016, In: Radio Science. 51, 7

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File
  10 Citations (Scopus)

  218 Downloads (Pure)

• Tomographic imaging of a large-scale travelling ionosphericdisturbance during the Halloween storm of 2003

  Bolmgren, K., Mitchell, C., Pinto Jayawardena, T., Bust, G. S., Bruno, J. & Mitchell, E., 3 Nov 2020, In: Annales Geophysicae. 38, 6, p. 1149-1157 9 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

• Tomographic imaging of the equatorial and low-latitude ionosphere over central-eastern Brazil

  Muella, M., de Paula, E. R., Mitchell, C. N., Kintner, P. M., Paes, R. R. & Batista, I. S., 2011, In: Earth Planets and Space. 63, 2, p. 129-138 10 p.

  Research output: Contribution to journal › Article

  • Brazil
  • tropical regions
  • ionospheres
  • ionosphere
  • electron density
  13 Citations (Scopus)

• Tomographic Imaging of Traveling Ionospheric Disturbances Using GNSS and Geostationary Satellite Observations

  Bolmgren, K., Mitchell, C., Bruno, J. & Bust, G., 2 Mar 2020, In: Journal of Geophysical Research: Space Physics. 125, 3, e2019JA027551.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Geostationary satellites
  • Satellites
  • Imaging techniques
  • Ionosphere
  • Carrier concentration
  1 Citation (Scopus)

  22 Downloads (Pure)

• Towards adapting a normal patient database forSPECT brain perfusion imaging

  Smith, N. D., Holmes, R. B., Soleimani, M., Evans, M. J., Cade, S. C. & Mitchell, C. N., Jun 2012, In: Inverse Problems. 28, 6, 17 p., 065001.

  Research output: Contribution to journal › Article › peer-review
  1 Citation (Scopus)

• Using sparse regularization for multi-resolution tomography of the ionosphere

  Panicciari, T., Smith, N. D., Mitchell, C. N., Da Dalt, F. & Spencer, P. S. J., 2015, In: Nonlinear Processes in Geophysics. 22, 5, p. 613-624 12 p.

  Research output: Contribution to journal › Article › peer-review

  • Ionosphere
  • ionospheres
  • Tomography
  • ionosphere
  • ionospherics
  5 Citations (Scopus)

• Why we’re preparing weather forecasts … in space

  Mitchell, C., 9 Oct 2014, The Conversation.

  Research output: Contribution to specialist publication › Article

  Open Access

  • Weather
  • Winter
  • Planet
  • Cold
  • Earth
• Chapter

  Testing the susceptibility of GNSS receivers to radio frequency interference

  Tong, J. R., Watson, R. J. & Mitchell, C. N., 2011, Institute of Navigation - International Technical Meeting 2011, ITM 2011. Fairfax: Institute of Navigation, p. 384-388 5 p. (Institute of Navigation - International Technical Meeting 2011, ITM 2011).

  Research output: Chapter in Book/Report/Conference proceeding › Chapter

  • radio
  • testing
  • injection

• The use of GLONASS data in ionospheric imaging over the Antarctic

  Yin, P., Mitchell, C. N. & Kinrade, J., Aug 2011, 2011 30th URSI General Assembly and Scientific Symposium, URSIGASS 2011. Piscataway, NJ: IEEE, 4 p. 6050960

  Research output: Chapter in Book/Report/Conference proceeding › Chapter

  • GLONASS
  • CHAMP
  • total electron content
  • ionosphere
  • positioning
• Conference contribution

  Algorithms for the mitigation of space weather threats at low latitudes, contributing to the extension of EGNOS over Africa

  Forte, B., Da Dalt, F., Panicciari, T., Pinto Jayawardena, T., Mitchell, C., Zin, A., Marradi, L., Muscinelli, R., Fiordiponti, R., Sreeja, V., Aquino, M., Dovis, F., Alfonsi, L., Cesaroni, C., Spogli, L., De Franceschi, G., Haggstrom, I., Enell, C. F., Chawdhry, P. K., Hoeg, P. & 6 others, von Benzon, H-H., Pozoga, M., Kos, T., Vukovic, J., Henley, E. & Jackson, D., 27 Jun 2016, International Beacon Satellite Symposium BSS-2016.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

• Experimentally Recorded Amplitude and Phase Scintillation through a Spirent Simulator

  Pinto Jayawardena, T., Mohd Ali, A., Forte, B., Kinrade, J., Mitchell, C., Smith, S. & Walter, T., 2014, The Insitute of Navigation, ION GNSS+ 2014.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  2 Citations (Scopus)

• GPS phase scintillation and auroral electrojet currents during geomagnetic storms of March 17, 2013 and 2015

  Prikryl, P., Ghoddousi-Fard, R., Viljanen, A., Weygand, J. M., Kunduri, B. S. R., Thomas, E. G., Ruohoniemi, J. M., Connors, M., Danskin, D. W., Jayachandran, P. T., Jacobsen, K. S., Andalsvik, Y. L., Durgonics, T., Oksavik, K., Zhang, Y., Spanswick, E., Sreeja, V., Aquino, M., Cilliers, P. J., Li, G. & 5 others, Ning, B., Mitchell, C. N., Spogli, L., Terkildsen, M. & Weatherwax, A. T., 10 Nov 2017, 32nd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS), 2017. IEEE, p. 1-4 4 p.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • auroral electrojets
  • Scintillation
  • magnetic storms
  • polar regions
  • scintillation
  1 Citation (Scopus)