Results 11 to 20 of about 7,904 (219)

Detection of Ionospheric Scintillation Based on XGBoost Model Improved by SMOTE-ENN Technique

Remote Sensing, 2021
Ionospheric scintillation frequently occurs in equatorial, auroral and polar regions, posing a threat to the performance of the global navigation satellite system (GNSS). Thus, the detection of ionospheric scintillation is of great significance in regard
Mengying Lin, Xuefen Zhu, Teng Hua, Xinhua Tang, Gangyi Tu, Xiyuan Chen   +5 more
doaj   +3 more sources

Solar Activity Impacts on Ionospheric Scintillation and Precise Point Positioning Based on Multi‐Year GNSS and Scintillation Observations

Space Weather
Solar activity induces ionospheric irregularities that degrade Global Navigation Satellite System (GNSS) performance through amplitude and phase scintillation.
Jincheng Li, Qi Liu, Xiaomin Luo, Manuel Hernández‐Pajares, Enric Monte‐Moreno, Guangxia Wang, Heng Yang, Chuanding Zhang, Li Yang, Yaoyao Liu   +9 more
doaj   +2 more sources

Drifting Ionospheric Scintillation Simulation for L-Band Geosynchronous SAR

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
An L-band geosynchronous synthetic aperture radar (GEO SAR) is susceptible to the ionospheric scintillation induced by ionospheric irregularities due to its lower carrier frequency.
Feixiang Tang, Yifei Ji, Yongsheng Zhang, Zhen Dong, Zhaokai Wang, Qingjun Zhang, Bingji Zhao, Heli Gao   +7 more
doaj   +3 more sources

Equatorial Ionospheric Scintillation Measurement in Advanced Land Observing Satellite Phased Array-Type L-Band Synthetic Aperture Radar Observations

Engineering
Amplitude stripes imposed by ionospheric scintillation have been frequently observed in many of the equatorial nighttime acquisitions of the Advanced Land Observing Satellite (ALOS) Phased Array-type L-band Synthetic Aperture Radar (PALSAR). This type of
Yifei Ji, Zhen Dong, Yongsheng Zhang, Feixiang Tang, Wenfei Mao, Haisheng Zhao, Zhengwen Xu, Qingjun Zhang, Bingji Zhao, Heli Gao   +9 more
doaj   +3 more sources

A Review of Ionospheric Scintillation Models. [PDF]

Surv Geophys, 2015
Priyadarshi S.
europepmc   +2 more sources

PECULIARITIES IN THE IONOSPHERIC SCINTILLATION SPECTRAL INDEX BEHAVIOR BY OBSERVATIONS OF THE COSMIC RADIO SOURCES AT THE DECAMETER WAVELENGTHS

Radio Physics and Radio Astronomy, 2019
Purpose: With relation to radio astronomy, ionospheric scintillation of discrete cosmic radio sources is an undesirable effect. At the same time, ionospheric scintillations carry information on the ionospheric turbulence and are a separate object of ...
S. K. Panishko, O. A. Lytvynenko
doaj   +1 more source

A comparison of satellite scintillation measurements with HF radar backscatter characteristics [PDF]

Annales Geophysicae, 2005
We examine the correspondence between high latitude ionospheric scintillation measurements made at 250MHz with the occurrence of 10MHz HF coherent radar backscatter, on 13 and 14 December 2002.
S. E. Milan, S. Basu, T. K. Yeoman, R. E. Sheehan   +3 more
doaj   +1 more source

Feasibility of precise navigation in high and low latitude regions under scintillation conditions [PDF]

, 2018
Scintillation is one of the most challenging problems in Global Navigation Satellite Systems (GNSS) navigation. This phenomenon appears when the radio signal passes through ionospheric irregularities.
Altadill, David, Barbosa, José, Blanch Llosa, Estefania, Camps Carmona, Adriano José, González Casado, Guillermo, Juan Zornoza, José Miguel, Orús Pérez, Raul, Riba Sagarra, Jaume, Rovira Garcia, Adrià, Sanz Subirana, Jaume   +9 more
core   +3 more sources

Scintillation effects in the magnetized plasma [PDF]

, 2019
Statistical characteristics of scattered electromagnetic waves in the turbulent magnetized plasma caused by electron density fluctuations are calculated using complex geometrical optics approximation taking into account both diffraction effects and ...
Ishimaru, Akira, Jandieri, George, Lesňák, Michal, Pištora, Jaromír   +3 more
core   +1 more source

Severe L-band scintillation over low-to-mid latitudes caused by an extreme equatorial plasma bubble: joint observations from ground-based monitors and GOLD

Earth, Planets and Space, 2023
The occurrence of plasma irregularities and ionospheric scintillation over the Caribbean region have been reported in previous studies, but a better understanding of the source and conditions leading to these events is still needed.
Jonas Sousasantos, Josemaria Gomez Socola, Fabiano S. Rodrigues, Richard W. Eastes, Christiano G. M. Brum, Pedrina Terra   +5 more
doaj   +1 more source