Results 21 to 30 of about 3,117 (297)

A Case Study of Polar Cap Sporadic-E Layer Associated with TEC Variations

Remote Sensing, 2021
The Sporadic-E (Es) layer is an often-observed phenomenon at high latitudes; however, our understanding of the polar cap Es layer is severely limited due to the scarce number of measurements.
Yong Wang, Periyadan T. Jayachandran, David R. Themens, Anthony M. McCaffrey, Qing-He Zhang, Shiva David, Richard Chadwick   +6 more
doaj   +1 more source

Influence of geomagnetic disturbances on scintillations of GLONASS and GPS signals as observed on the Kola Peninsula

Solar-Terrestrial Physics, 2023
We have compared effects of geomagnetic disturbances during magnetic storms of various types (CME and CIR) and during an isolated substorm on scintillations of GLONASS and GPS signals, using a Septentrio PolaRx5 receiver installed in Apatity (Murmansk ...
Belahovskiy V. B., Budnikov P. A., Kalishin A. S., Pilgaev S. V., Roldugin A. V.   +4 more
doaj   +1 more source

Validating Ionospheric Scintillation Indices Extracted from 30s-Sampling-Interval GNSS Geodetic Receivers with Long-Term Ground and In-Situ Observations in High-Latitude Regions

Remote Sensing, 2022
As a frequently-occurred phenomenon in the high-latitude region, ionospheric scintillations affect the stable service of the positioning navigation and timing service of the Global Navigation Satellite System (GNSS), calling for an urgent need of ...
Dongsheng Zhao, Qianxin Wang, Wang Li, Shuangshuang Shi, Yiming Quan, Craig M. Hancock, Gethin Wyn Roberts, Kefei Zhang, Yu Chen, Xin Liu, Zemin Hao, Shuanglei Cui, Xueli Zhang, Xing Wang   +13 more
doaj   +1 more source

SEARCH FOR LOW-INTENSITY INTERFERENCE AND DISTRIBUTIONS OF TRANSIENT SIGNALS’ CHARACTERISTICS IN THE DATA OF DECAMETER SURVEY OF NORTHERN SKY

Radio Physics and Radio Astronomy, 2018
Purpose: The most challenging problem of transient signal research is to prove their cosmic origin. There is no radio telescope at decameter wavelengths, which has an effective area (i.e.
V. V. Zakharenko, I. P. Kravtsov, I. Y. Vasylieva, A. A. Konovalenko, O. M. Ulyanov, V. L. Kolyadin   +5 more
doaj   +1 more source

Estimation and Analysis of NavIC Receiver Tracking Jitter due to Amplitude and Phase Scintillations [PDF]

E3S Web of Conferences
An independent, stand-alone satellite navigation system called Navigation with Indian Constellation (NavIC) was created by an Indian space research organization (ISRO) for civilian position, navigation and time applications using mobile devices. Also, it
Swamy K.C.T., Pandurangaiah Y., Reddy Ammana Supraja   +2 more
doaj   +1 more source

Ionospheric irregularities and scintillations: a direct comparison of in situ density observations with ground-based L-band receivers

Earth, Planets and Space, 2020
Ionospheric irregularities can affect satellite communication and navigation by causing scintillations of radio signals. The scintillations are routinely measured using ground-based networks of receivers.
Sharon Aol, Stephan Buchert, Edward Jurua   +2 more
doaj   +1 more source

The Scintillation of Stars [PDF]

Nature, 1950
THE observational evidence provided in the letters which have appeared under this heading in Nature of April 29 and earlier suggests to a meteorologist that scintillation may be associated with waves at an interface between two currents of air.
openaire   +6 more sources

Climatology and modeling of ionospheric scintillations and irregularity zonal drifts at the equatorial anomaly crest region [PDF]

Annales Geophysicae, 2017
In this study the climatology of ionospheric scintillations and the zonal drift velocities of scintillation-producing irregularities are depicted for a station located under the southern crest of the equatorial ionization anomaly.
M. T. A. H. Muella, M. H. Duarte-Silva, A. O. Moraes, E. R. de Paula, L. F. C. de Rezende, L. Alfonsi, B. J. Affonso   +6 more
doaj   +1 more source

Equatorial plasma bubbles and L-band scintillations in Africa during solar minimum [PDF]

Annales Geophysicae, 2012
We report on the longitudinal, local time and seasonal occurrence of equatorial plasma bubbles (EPBs) and L band (GPS) scintillations over equatorial Africa.
V. V. Paznukhov, C. S. Carrano, P. H. Doherty, K. M. Groves, K. M. Groves, R. G. Caton, C. E. Valladares, G. K. Seemala, C. T. Bridgwood, J. Adeniyi, L. L. N. Amaeshi, B. Damtie, F. D'Ujanga Mutonyi, J. O. H. Ndeda, P. Baki, O. K. Obrou, B. Okere, G. M. Tsidu   +17 more
doaj   +1 more source

FRidh/scintillations v0.1.0

, 2016
<p>Waves propagating through the atmosphere are affected by atmospheric turbulence. For example, when listening to a distant aircraft you can hear the level fluctuate over time. These fluctuations are known as scintillations.
Frederik Rietdijk (8182836), Frederik Rietdijk   +1 more
core   +1 more source