Results 11 to 20 of about 2,679 (211)

GPS and ionospheric scintillations [PDF]

Space Weather, 2007
Ionospheric scintillations are one of the earliest known effects of space weather. Caused by ionization density irregularities, scintillating signals change phase unexpectedly and vary rapidly in amplitude. GPS signals are vulnerable to ionospheric irregularities and scintillate with amplitude variations exceeding 20 dB. GPS is a weak signal system and
P. M. Kintner, B. M. Ledvina, E. R. de Paula   +2 more
openaire   +3 more sources

A comparison between large‐scale irregularities and scintillations in the polar ionosphere

Geophysical Research Letters, 2016
A comparison tool has been developed by mapping the global GPS total electron content (TEC) and large coverage of ionospheric scintillations together on the geomagnetic latitude/magnetic local time coordinates. Using this tool, a comparison between large‐
Y. Wang, Q.‐H. Zhang, P. T. Jayachandran, M. Lockwood, S.‐R. Zhang, J. Moen, Z.‐Y. Xing, Y.‐Z. Ma, M. Lester   +8 more
doaj   +2 more sources

Relatively Intense Daytime GNSS Amplitude Scintillations at Middle Latitude Linked With Multi‐Layered Strong Es Structures

Geophysical Research Letters
Intense Global Navigation Satellite System (GNSS) amplitude scintillations usually occur in nighttime at low latitudes due to ionospheric plasma bubble irregularities.
Wenjie Sun, Yuichi Otsuka, Guozhu Li, Zhe Yang, Yuanfa Ji, Wenbin Liang, Renjin Zhang, Xiukuan Zhao, Lianhuan Hu, Biqiang Zhao, Jianfei Liu, Guofeng Dai, Yi Li, Haiyong Xie, Baiqi Ning   +14 more
doaj   +2 more sources

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

Modeling of ionospheric scintillation

Journal of Space Weather and Space Climate, 2022
A signal, such as from a GNSS satellite or microwave sounding system, propagating in the randomly inhomogeneous ionosphere, experiences chaotic modulations of its amplitude and phase. This effect is known as scintillation. This article reviews basic theoretical concepts and simulation strategies for modeling the scintillation phenomenon. We focused our
Vasylyev, Dmytro, Beniguel, Yannick, Wilken, Volker, Kriegel, Martin, Berdermann, Jens   +4 more
openaire   +2 more sources

Influence of different types of ionospheric disturbances on GPS signals at polar latitudes [PDF]

Annales Geophysicae, 2021
The comparative research of the influence of different types of auroral particle precipitation and polar cap patches (PCPs) on the global positioning system (GPS) signals disturbances in the polar ionosphere was done.
V. B. Belakhovsky, Y. Jin, W. J. Miloch
doaj   +1 more source

The Prediction of Day‐to‐Day Occurrence of Low Latitude Ionospheric Strong Scintillation Using Gradient Boosting Algorithm

Space Weather, 2021
Ionospheric scintillations caused by equatorial plasma bubbles (EPBs) can seriously affect various high technology systems based on Global Navigation Satellite System (GNSS) signals at equatorial and low latitudes.
Xiukuan Zhao, Guozhu Li, Haiyong Xie, Lianhuan Hu, Wenjie Sun, Sipeng Yang, Yi Li, Baiqi Ning, Hisao Takahashi   +8 more
doaj   +1 more source

Investigation of the Physical Processes Involved in GNSS Amplitude Scintillations at High Latitude: A Case Study

Remote Sensing, 2021
The storm onset on 7 September 2017, triggered several variations in the ionospheric electron density, causing severe phase fluctuations at polar latitudes in both hemispheres.
Giulia D’Angelo, Mirko Piersanti, Alessio Pignalberi, Igino Coco, Paola De Michelis, Roberta Tozzi, Michael Pezzopane, Lucilla Alfonsi, Pierre Cilliers, Pietro Ubertini   +9 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

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