Results 111 to 120 of about 184,127 (275)

Wave propagation and earth satellite radio emission studies [PDF]

Radio propagation studies of the ionosphere using satellite radio beacons are described. The ionosphere is known as a dispersive, inhomogeneous, irregular and sometimes even nonlinear medium. After traversing through the ionosphere the radio signal bears
Flaherty, B. J., Liu, C. H., Yeh, K. C.
core   +1 more source

Global distribution of ionospheric scintillations from the Real-Time GPS ROTI [PDF]

, 2018
A global real-time monitoring system has been implemented in the frame of ESA-ESTEC/EGNOS-POfunded project MONITOR. It is based on world-wide GNSS datastreams distributed by means of NTRIP and provides multiple ionospheric indices and products to the ...
García Rigo, Alberto, Hernández Pajares, Manuel, Roma-Dollase, David   +2 more
core  

Dayside Field‐Aligned Current Impacts on Ionospheric Irregularities [PDF]

, 2020
A. Fæhn Follestad, Katie Herlingshaw, Hossein Ghadjari, D. J. Knudsen, K. A. McWilliams, J. Moen, Andres Spicher, J. Wu, K. Oksavik   +8 more
openalex   +1 more source

Planar ion trap (retarding potential analyzer) experiment for atmosphere explorer [PDF]

The retarding potential analyzer and drift meter were carried aboard all three Atmosphere Explorer spacecraft. These instruments measure the total thermal ion concentration and temperature, the bulk thermal ion velocity vector and some limited properties
Hanson, W. B., Lippincott, C. R., Sanatani, S., Zuccaro, D. R.   +3 more
core   +1 more source

Daytime zonal drifts in the ionospheric 150 km region estimated using EAR observations [PDF]

, 2017
15th MST Radar WorkshopSession M3: Ionospheric irregularities and IS experimentsMay 27 (Sat), NIPR ...

core   +1 more source

Interferometry of ionospheric E-region irregularities based on Kunming VHF radars

Frontiers in Astronomy and Space Sciences
There is a long history of using VHF radar systems to detect ionospheric irregularities based on the theory of coherent scattering. According to previous work, there is a high occurrence of field-aligned irregularities (FAIs) in the ionospheric E-region ...
Bo Chen, Yihao Xu, Chen Zhou, Yuqiang Zhang, Yi Liu, Tong Xu, Bin Xu, Jian Feng, Ting Lan, Haiyin Qing, Zhongxin Deng, Xiang Wang, Xiang Wang, Xinmiao Zhang   +13 more
doaj   +1 more source

Satellite‐beacon Ionospheric‐scintillation Global Model of the upper Atmosphere (SIGMA) II: Inverse modeling with high‐latitude observations to deduce irregularity physics [PDF]

, 2016
K. Deshpande, G. S. Bust, C. R. Clauer, W. A. Scales, N. A. Frissell, J. M. Ruohoniemi, Luca Spogli, Cathryn N. Mitchell, A. T. Weatherwax   +8 more
openalex   +1 more source

Phase perturbation measurements through a heated ionosphere [PDF]

High frequency radiowaves incident on an overdense (i.e., HF-frequency penetration frequency) ionosphere produce electron density irregularities. The effect of such ionospheric irregularities on the phase of UHF-radiowaves was determined.
Frey, A., Gordon, W. E.
core   +1 more source

Development of a methodology for deriving Plasmaspheric Total Electron Content from In-Situ electron density measurements in highly eccentric equatorial orbits [PDF]

, 2017
15th MST Radar WorkshopSession M3: Ionospheric irregularities and IS experimentsMay 27 (Sat), Poster ...

core   +1 more source

Signature of ionospheric irregularities under different geophysical conditions on SBAS performance in the western African low-latitude region

, 2017
. Rate of change of TEC (ROT) and its index (ROTI) are considered a good proxy to characterize the occurrence of ionospheric plasma irregularities like those observed after sunset at low latitudes.
O. Abe, O. Abe, X. O. Villamide, C. Paparini, R. H. Ngaya, S. Radicella, B. Nava   +6 more
semanticscholar   +1 more source