Results 101 to 110 of about 2,215 (219)

Accuracy assessment of Precise Point Positioning with multi-constellation GNSS data under ionospheric scintillation effects

Journal of Space Weather and Space Climate, 2018
GPS and GLONASS are currently the Global Navigation Satellite Systems (GNSS) with full operational capacity. The integration of GPS, GLONASS and future GNSS constellations can provide better accuracy and more reliability in geodetic positioning, in ...
Marques Haroldo Antonio, Marques Heloísa Alves Silva, Aquino Marcio, Veettil Sreeja Vadakke, Monico João Francisco Galera   +4 more
doaj   +1 more source

The statistical correlations of rate of change of TEC index (ROTI) on the standard scintillation indices over the Canadian Arctic

Frontiers in Astronomy and Space Sciences
For decades, the Rate of Change of Total Electron Content Index (ROTI) has been employed to monitor and quantify ionospheric irregularities, serving as a potential substitute for standard scintillation indices.
Yong Wang, P. T. Jayachandran, Fei-Fei Wang, Q.-H. Zhang, Shu-Ji Sun, Tong Xu, Zan-Yang Xing, Yu-Zhang Ma, J. M. Ruohoniemi, S. G. Shepherd   +9 more
doaj   +1 more source

Global Ionospheric Scintillation Estimation Based on Phase Screen Modeling From One‐Dimensional Satellite Data

Space Weather
Ionospheric scintillations, which usually manifest as sudden, rapid fluctuations in radio wave signal phase and amplitude, challenge the reliability of satellite communication and navigation.
Yuhao Zheng, Chao Xiong, Luca Spogli, Rayan Iman, Lucilla Alfonsi   +4 more
doaj   +1 more source

Ionospheric variations observed at Syowa Station, Antarctica, during large space weather events in May and October 2024

Earth, Planets and Space
The largest geomagnetic storm to date of Solar Cycle 25 occurred in May 2024, followed by another significant event in October 2024. Analysis of ionosonde and GNSS scintillation data at Syowa Station, Antarctica, revealed three common features during ...
Chihiro Tao, Michi Nishioka, Naoko Takahashi, Satoshi Andoh, Takahiro Naoi, Takumi Kondo, Masato Nagahara, Yuki Kubo, Takuya Tsugawa   +8 more
doaj   +1 more source

Bipolar climatology of GNSS ionospheric scintillation under quiet geomagnetic conditions

, 2010
We analyze data of GNSS ionospheric scintillation over polar regions of both hemispheres, to characterize the scintillation phenomena under quiet conditions of the near‐Earth environment through the development of a “scintillation climatology” of the ...
Aquino, Marcio H. O., De Franceschi, Giorgiana, Alfonsi, Lucilla, Mitchell, Cathryn N., Romano, Vincenzo, Dodson, Alan, Spogli, Luca   +6 more
core   +1 more source

Prediction of Ionospheric Scintillation with ConvGRU Networks Using GNSS Ground-Based Data across South America

Remote Sensing
This study investigates the relationship between geomagnetic activities and ionospheric scintillations, focusing on how solar and geomagnetic parameters influence ionospheric disturbances across varying time frames and latitudes.
Alireza Atabati, Iraj Jazireeyan, Mahdi Alizadeh, Richard B. Langley   +3 more
doaj   +1 more source

BIOMASS End-to-End Mission Simulation and Performance Assessment [PDF]

, 2011
This paper discusses the implementation of an endto- end simulator for the BIOMASS mission. An overview of the system architecture is provided along with a functional description of the modules that comprise the ...
Franco, Raffaella, Rogers, Neil, Ulander, Lars, Murdin, Daniel, Guardabrazo, Tomás, De Zan, Francesco, Papathanassiou, Kostas, Bourlon, Valérie, López-Dekker, Paco, Quegan, Shaun, Younis, Marwan, Ramongassie, Sophie, Börner, Thomas, Taveneau, Nicolas   +13 more
core  

Occurrence of ionospheric scintillation during geomagnetic storms in Indonesia (2003–2024) using superposed epoch analysis

Earth and Planetary Physics
Ionospheric scintillation refers to rapid radio signal amplitude and phase fluctuations due to small-scale irregularities in the ionosphere. Occurring primarily at equatorial and low latitudes, scintillation is linked to equatorial plasma bubbles (EPBs),
Angga Yolanda Putra, Theodosius Marwan Irnaka, Prayitno Abadi, La Ode Muhammad Musafar Kilowasid, Fitri Nuraeni, Erlansyah, Suraina, Afif Rakhman   +7 more
doaj   +1 more source

Investigation into Geomagnetic storms and ionospheric scintillation

, 2019
Understanding how space weather phenomenon affects daily life has been a main focus of space weather studies. In particular, identifying the relationship between solar activities, ionospheric irregularities and consequently ionospheric scintillation has ...
Tijerina, Lucas T, Herrera Tenorio, Julian A, Vaggu, Pralay R, Nigro, Daniel R, Thakrar, Chintan A, Deshpande, Kshitija B, Priore, Marissa R, Mekonnen, Danayit T, Gachancipa Parga, Jose N   +8 more
core  

Ionospheric Perturbations and Their Impact on GNSS - Investigated by DLRs High-Rate Receiver Chain

, 2013
Global Navigation Satellite Systems (GNSS) such as GPS, Galileo or Glonass provide good positioning results for a lot of applications. However, they can be heavily disturbed by space weather hazards.
Hlubek, Nikolai, Wilken, Volker, Jakowski, Norbert, Gewies, Stefan, Wassaie, Mogese, Damtie, Baylie   +5 more
core