Results 31 to 40 of about 1,334 (170)
Electron density retrieval from truncated Radio Occultation GNSS data [PDF]
, 2019 This paper summarizes the definition and validation of two complementary new strategies, to invert incomplete Global Navigation Satellite System Radio-Occultation (RO) ionospheric measurements, such as the ones to be provided by the future EUMETSAT Polar
Cardellach Galí, Estel +3 more
core +2 more sources
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.
Vasylyev Dmytro +4 more
doaj +1 more source
The 6 September 2017 X-Class Solar Flares and Their Impacts on the Ionosphere, GNSS, and HF Radio Wave Propagation. [PDF]
Space Weather, 2018 Yasyukevich Y +5 more
europepmc +2 more sources
Space weather challenges of the polar cap ionosphere [PDF]
, 2016 This paper presents research on polar cap ionosphere space weather phenomena conducted during the European Cooperation in Science and Technology (COST) action ES0803 from 2008 to 2012.
Alfonsi, Lucilla +5 more
core +4 more sources
Remote Sensing, 2023 A growing number of SmallSat/CubeSat constellations with high-rate (50–100 Hz) global navigation satellite system radio occultations (GNSS-RO) as well as low-rate (1 Hz) precise orbit determination (GNSS-POD) limb-viewing capabilities provide ...
Nimalan Swarnalingam +3 more
doaj +1 more source
AATR an ionospheric activity indicator specifically based on GNSS measurements [PDF]
, 2018 This work reviews an ionospheric activity indicator useful for identifying disturbed periods affecting the performance of Global Navigation Satellite System (GNSS). This index is based in the Along Arc TEC Rate (AATR) and can be easily computed from dual-
González Casado, Guillermo +5 more
core +2 more sources
Geometric total electron content models for topside ionospheric sounding [PDF]
, 2014 The ionosphere is commonly divided into the portion below (bottomside) and above (topside) the region at which peak values of electron density occur. Topside ionospheric modeling is a challenging problem because of the limited data available. Indeed, the
Tancredi, Urbano
core +1 more source
A New Method of Electron Density Retrieval from MetOp-A’s Truncated Radio Occultation Measurements
Remote Sensing, 2023 The radio occultation (RO) measurements of the Global Navigation Satellite System’s (GNSS’s) signals onboard a Low Earth Orbiting (LEO) satellite enable the computation of the vertical electron density profile from the LEO satellite’s orbit height down ...
M. Mainul Hoque +8 more
doaj +1 more source
Remote Sensing, 2020 National Oceanic and Atmospheric Administration (NOAA) operational Advanced Technology Microwave Sounder (ATMS) and Advanced Microwave Sounding Unit-A (AMSU-A) data used in numerical weather prediction and climate analysis are essential to protect life ...
Robbie Iacovazzi +3 more
doaj +1 more source
Radio occultation techniques for probing the ionosphere
Annals of Geophysics, 2004 GPS radio occultation measurements establish the basis for a new remote sensing technique for vertical profile information on the electron density of the entire ionosphere from satellite orbit heights down to the bottomside.
M. Angling, R. Leitinger, N. Jakowski
doaj +1 more source