Results 81 to 90 of about 15,182,981 (294)
Ionospheric tomography using GNSS reflections [PDF]
, 2015 In this paper, we report a preliminary analysis of the impact of Global Navigation Satellite System Reflections (GNSS-R) data on ionospheric monitoring over the oceans.
Marco Pallarés, Josep +2 more
core +4 more sources
Analysis of GNSS Interference Events Based on TRITON GNSS-R Measurements
NavigationAlthough the issue of global navigation satellite system (GNSS) interference has been addressed in the community of satellite navigation, the extent of GNSS interference in the past couple of years has raised serious concerns for air and marine ...
Jyh-Ching Juang, Yung-Fu Tsai
doaj +1 more source
First Evaluation of Topography on GNSS-R: An Empirical Study Based on a Digital Elevation Model
Remote Sensing, 2019 Understanding the effects of Earth’s surface topography on Global Navigation Satellite Systems Reflectometry (GNSS-R) space-borne data is important to calibrate experimental measurements, so as to provide accurate soil moisture content (SMC ...
Hugo Carreno-Luengo +2 more
doaj +1 more source
GNSS-R Altimeter Based on Doppler Multi-looking
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2014 Measuring ocean mesoscale variability is one of the main objectives of next generation satellite altimeters. Current radar altimeters make observations only at the nadir sub-satellite ground track, which is not sufficient to sample the ocean surface with the required spatial and temporal sampling.
Salvatore D'Addio +4 more
openaire +4 more sources
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT The design of control systems for high‐agility mechanical systems operating in extreme environments is a significant challenge in nonlinear dynamics. This paper addresses the complex dynamic control problem of a hypersonic interceptor, modeled as a multi‐input multi‐output (MIMO) mechanical system characterized by strong aerodynamic cross ...
Mohammad Mahdi Soori +1 more
wiley +1 more source
International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.ABSTRACT This paper presents a synthetic rock mass (SRM) methodology to investigate the influence of fracture volumetric intensity (P32$P_{32}$) on the strength anisotropy of foliated rock masses containing non‐persistent fracture sets. The approach integrates UAV‐based discontinuity mapping, discrete fracture network (DFN) modeling, and lattice‐spring
G. G. de Magalhães +2 more
wiley +1 more source
Geoscience Letters, 2020 The soil freeze/thaw processes have a significant impact on the surface energy and moisture balance, which play a key role in ecosystem diversity and productivity. The air-/space-borne Global Navigation Satellite System (GNSS)-Reflectometry (GNSS-R) is a
Xuerui Wu, Shuanggen Jin, Xinqiu Ouyang
doaj +1 more source
Evaluation and assimilation of Arctic Weather Satellite data in the AROME‐Arctic forecast system
Quarterly Journal of the Royal Meteorological Society, EarlyView.The Arctic Weather Satellite (AWS), launched in August 2024, is a prototype for the future EPS–Sterna constellation of small satellites carrying an innovative microwave sounder. We present the first assessment of AWS in the regional AROME‐Arctic numerical weather prediction system, covering post‐launch calibration results and the impact of AWS ...
Stéphanie Guedj +2 more
wiley +1 more source
Sensors, 2016 The use of the reflected Global Navigation Satellite Systems’ (GNSS) signals in Earth observation applications, referred to as GNSS reflectometry (GNSS-R), has been already studied for more than two decades.
Miguel Angel Ribot +2 more
doaj +1 more source
, 2018 <p>This release has several improvements in different dimensions, addition of new features and bug fixes:</p> Improvements in Accuracy: <ul> <li>Part of the RTKLIB core library has been integrated into GNSS-SDR.
Gerald LaMountain +25 more
core +1 more source