Results 51 to 60 of about 5,624 (239)

Study of the Mid‐Latitude Airglow Responses to Geomagnetic Storms Based on Long‐Term Observations in Japan With the TIMED Satellite and Ionosondes

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Variations in nighttime airglow at mid‐latitudes during geomagnetic disturbances reflect the propagation of atmospheric and plasma disturbances from polar heating as well as local chemical processes. However, their detailed mechanisms remain unclear.
Y. Hotta, K. Shiokawa, Y. Otsuka, M. Nishioka, J. Yue   +4 more
wiley   +1 more source

Global GNSS Observation of Mesoscale Ionospheric Irregularities (2006–2024)

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Mesoscale ionospheric irregularities are statistically investigated using an unprecedented 19‐year long‐term global GNSS (Global Navigation Satellite System) TEC (total electron content) data set. These irregularities are represented by ionospheric fluctuations within a 5°× ${}^{\circ}\times $ 3.75° ${}^{\circ}$ (latitude by longitude) region ...
Shun‐Rong Zhang, Jing Liu, Anthea J. Coster, Sevag Derghazarian, Philip J. Erickson, Larisa P. Goncharenko, Nestor Aponte, William Rideout   +7 more
wiley   +1 more source

ROSE: a high performance oblique ionosonde providing new opportunities for ionospheric research

Annals of Geophysics, 1994
A high quality high frequency (HF) oblique ionosonde has been developed for use in propagation research and associated studies of the ionosphere. The ionosonde is known as ROSE (radio oblique sounding equipment) and requires the connection of a specially
P. S. Cannon, P. C. Arthur
doaj   +1 more source

Deep learning for face detection using matlab [PDF]

, 2020
This project report presents face detection using Convolutional Neural Network algorithm and Deep Learning combination (DCT / DL) throughout MATLAB simulation and modeling.
Slim, Salim Adnan
core  

Validation of electron density profiles derived from oblique ionograms over the United Kingdom [PDF]

, 2001
Inversion algorithms are available to derive the vertical electron density profile at the midpoint of an oblique sounder path. The techniques open up the possibility of monitoring the ionosphere at otherwise inaccessible locations, such as over sea or ...
Arthur, Barry, C. N. Mitchell, Heaton, J. A. T. Heaton, L. Kersley, N. C. Rogers, P. S. Cannon, Shukla, Titheridge   +9 more
core   +1 more source

Validation of Ionospheric Models at Mid‐ and High‐Latitudes: Climatological Performance of WACCM‐X (SD) and TIE‐GCM in foF2

Space Weather, Volume 24, Issue 3, March 2026.
Abstract Modeling the high‐latitude ionosphere‐thermosphere system is imperative to understanding the impacts of space weather on modern technology, such as communications and navigation systems. At low‐ and mid‐latitudes, physics‐based and empirical models are well‐developed and capture the variability of the ionosphere to a good degree of accuracy ...
Emma‐Claire Gurney, David R. Themens, Matthew K. Brown, Sean Elvidge   +3 more
wiley   +1 more source

Doppler vertical sounding of the ionosphere at the Akademik Vernadsky station

Український антарктичний журнал, 2020
The paper aims at providing the technical information about Doppler vertical sounding of the ionosphere that started at the Ukrainian Antarctic Akademik Vernadsky station since 2017; developing the technique for processing and visualization of data of ...
A. Zalizovski, O. Koloskov, A. Kashcheyev, S. Kashcheyev, Y. Yampolski, O. Charkina   +5 more
doaj   +1 more source

Optimization of PEDOT: PSS thin film for organic solar cell application [PDF]

, 2014
As a clean and renewable energy source, the development of the organics solar cells is very promising due to the inorganic solar cell inconvenient production process and material shortness.
Abdul Talib, Yuraimy Yakimin
core  

Assessing the quality of ionogram interpretation using the HF Doppler technique [PDF]

, 2007
International audienceThe first joint common volume measurements by the Digisonde Portable Sounder (DPS-4) and a new Doppler type system has been run at the Pruhonice ionospheric observatory (49.99° N, 14.54° E) since January 2004. The measurement of the
Buresova, D., Chum, J., Drobzheva, Ya., Hruska, F., Krasnov, V., Lastovicka, J.   +5 more
core   +2 more sources

Forecasting Local Ionospheric Parameters Using Transformers

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 1, February 2026.
Abstract We present a novel method for forecasting key ionospheric parameters using transformer‐based neural networks. The model provides accurate forecasts and uncertainty quantification of the F2‐layer peak plasma frequency (foF2), the F2‐layer peak density height (hmF2), and total electron content for a given geographic location.
D. J. Alford‐Lago, C. W. Curtis, A. T. Ihler, D. P. Drob, K. A. Zawdie   +4 more
wiley   +1 more source