Results 81 to 90 of about 2,215 (219)

Ionospheric scintillation impact on the performance of communication satellites [PDF]

, 2023
Satellite-mediated radio communication links are impacted by ionospheric propagation effects. Communication outage can result from a cumulative effect of ionospheric absorption, Faraday rotation of wave polarization components, random fading of signal ...
Kriegel, Martin, Wilken, Volker, Berdermann, Jens, Vasylyev, Dmytro, Ferreira, Arthur Amaral   +4 more
core  

Ionospheric Scintillation Activity Over Canada in 2019–2023 and Its Potential Influence on Wide Area Augmentation System (WAAS) Navigation Services for Aviation

Space Weather
Ionospheric scintillation caused by space weather impacts the accuracy and availability of GNSS services and is considered a natural hazard for aviation and other GNSS users. Increased solar activity in 2021–2023, attributed to the ascending phase of the
L. Nikitina, R. A. D. Fiori, K. Sievers, A. Rynard, Q. Ciardelli   +4 more
doaj   +1 more source

Spatial Analysis of GNSS Measurements from an Equatorial Ionospheric Scintillation Monitoring Receiver (ISMR) Network

, 2014
editorial reviewedThe ionosphere has always been a major limitation for GNSS positioning applications. Free electrons in the ionosphere perturb the propagation of GNSS radio signals involving both refraction and diffraction effects. In particular, small-
Lonchay, Matthieu, Cornet, Yves, Warnant, René, Wautelet, Gilles, Aquino, Marcio   +4 more
core  

Pembangunan pembelajaran mobile dalam kejuruteraan

, 2016
Perkembangan pembelajaran mobile hari ini memberi peluang untuk teknologi mobile dan teknologi Computer Aided Design (CAD) diintegrasikan dalam proses reka bentuk.
Ismail, Irwan Mahazir
core  

Measurements and simulation of ionospheric scattering on VHF and UHF radar signals : channel scattering function [PDF]

, 2009
The design and operation of transionospheric VHF and UHF radars requires knowledge of amplitude and phase scintillation due to ionospheric scattering.
Cannon, Paul, Cannon, Paul; id_orcid, Groves, Keith, Rogers, Neil, Rogers, NC, Groves, KM   +5 more
core   +1 more source

Characteristics of ionospheric scintillation climatology over Indian low-latitude region during the 24th solar maximum period

Geodesy and Geodynamics, 2019
The amplitude and phase of L-band satellite signals are fluctuated randomly due to small scale electron density irregularity structures in the ionosphere which result in fleeting variations, known as ‘ionospheric scintillations’.
K. Sahithi, M. Sridhar, Sarat K. Kotamraju, K.Ch. Sri Kavya, G. Sivavaraprasad, D.Venkata Ratnam, Ch. Deepthi   +6 more
doaj   +1 more source

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   +1 more source

Automatic ionospheric scintillation detector for global navigation satellite system receivers

, 2015
Severe ionosphere scintillations have been known to affect the performance and measurement accuracy of Global Navigation Satellite System (GNSS) receivers. The scintillation in signal amplitude and phase reduces the number of available GNSS satellites by
Sivavaraprasad, Gampala, Lee, Jiyun, Ratnam, Devanaboyina Venkata   +2 more
core   +1 more source

The Performance of DIXSG on Characterizing Global and Regional Ionospheric Disturbances Utilizing Geodetic Receiver Network‐A Case Study

Space Weather
As the 25th solar cycle enters a highly active phase, the resulting ionospheric irregularities induce disturbances in signals of Global Navigation Satellite System (GNSS), significantly disrupting its global stable positioning, navigation, and timing ...
Dongsheng Zhao, Xueli Zhang, Peicheng Zhang, Hao Liu, Kefei Zhang, Wang Li, Andong Hu, Longjiang Li, Shuanglei Cui, Yuhao Hou, Craig M. Hancock, Andrzej Krankowski   +11 more
doaj   +1 more source

Correction of Ionosphere for InSAR by the Combination of Differential TEC Estimators

, 2013
Low frequency spaceborne SAR configurations are favoured for global forest mapping applications and D-InSAR applications over natural terrain. Several missions have been scheduled to be launched / or proposed to be implemented in the next years: JAXA’s ...
Kim, Jun Su, Papathanassiou, Konstantinos   +1 more
core