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Ionospheric corrections tailored to the Galileo High Accuracy Service
(2021-12)
Article
Open AccessThe Galileo High Accuracy Service (HAS) is a new capability of the European Global Navigation Satellite System that is currently under development. The Galileo HAS will start providing satellite orbit and clock corrections ... -
Sensitivity analysis of maximum circulation of wake vortex encountered by en-route aircraft
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-07-16)
Article
Open AccessWake vortex encounters (WVE) can pose significant hazard for en-route aircraft. We studied the sensitivity of wake vortex (WV) circulation and decay to aircraft mass, altitude, velocity, density, time of catastrophic wake ... -
Flows between orthogonally stretching parallel plates
(2021-02-01)
Article
Open AccessNavier–Stokes equilibrium solutions of a viscous fluid confined between two infinite parallel plates that can independently stretch or shrink in orthogonal directions are studied. It is assumed that the admissible solutions ... -
Automated sequencing and merging with dynamic aircraft arrival routes and speed management for continuous descent operations
(2021-11)
Article
Open AccessIn this paper, we present a novel methodology to manage arrival traffic in terminal airspace. We define two areas around the airport, aiming to efficiently schedule incoming traffic. A four-dimensional (4D) trajectory ... -
Acoustic effects on heat transfer on the ground and in microgravity conditions
(2021-10)
Article
Open AccessA critical issue in future long-term space exploration missions is the storage and management of cryogenic propellants. Storage tanks are exposed to extreme temperatures and radiation, which can generate hot spots on the ... -
Analysis of ‘Pre-Fit’ Datasets of gLAB by Robust Statistical Techniques
(MDPI AG, 2021-05-24)
Article
Open AccessThe GNSS LABoratory tool (gLAB) is an interactive educational suite of applications for processing data from the Global Navigation Satellite System (GNSS). gLAB is composed of several data analysis modules that compute the ... -
Active flow control optimisation on SD7003 airfoil at pre and post-stall angles of attack using synthetic jets
(2021-06-10)
Article
Restricted access - publisher's policyThe use of Active Flow Control (AFC) technologies to modify the forces acting on streamlined bodies is one of the most active research fields in aerodynamics. For each particular application, finding the optimum set of AFC ... -
Flight planning in multi-unmanned aerial vehicle systems: Nonconvex polygon area decomposition and trajectory assignment
(SAGE PUBLICATIONS INC, 2021-02-25)
Article
Open AccessNowadays, it is quite common to have one unmanned aerial vehicle (UAV) working on a task but having a team of UAVs is still rare. One of the problems that prevent us from using teams of UAVs more frequently is flight ... -
Characterization of three-dimensional vortical structures in the wake past a circular cylinder in the transitional regime
(2020)
Article
Open AccessThe flow past a circular cylinder in the transitional regime at Re = 2000 has been thoroughly investigated via well resolved direct numerical simulation with a spectral element code. Spanwise periodic boundary conditions ... -
Polar electron content from GPS data-based global ionospheric maps: assessment, case studies, and climatology
(2020-04-22)
Article
Open AccessThe electron content distribution of the north and south polar ionosphere from 2001 to the beginning of 2019 is analyzed by using the UQRG global ionospheric map (GIM) of vertical total electron content (VTEC), computed ... -
A generalized supervised classification scheme to produce provincial wetland inventory maps: an application of Google Earth Engine for big geo data processing
(2019-10-02)
Article
Open AccessWetlands are important natural resources due to their numerous ecological services. Consequently, identifying their locations and extents is imperative. The stability, repeatability, cost-effectiveness, multi-scale coverage, ... -
Satellite selection in the context of an operational GBAS
(2019-02-27)
Article
Open AccessWhen incorporating multiple constellations into future ground based augmentation systems (GBAS), a problem with limited VDB (VHF data broadcast) capacity might arise. Furthermore, the number of airborne receiver tracking ...
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