Results 31 to 40 of about 1,229 (188)
EGNOS vertical protection level assessment
, 2003 The EGNOS Signal In Space (SIS) performance is defined in terms of accuracy, integrity, continuity of service and availability. For Civil Aviation, those four components of the performance shall fulfill ICAO requirements (particularly stringent for the integrity). EGNOS is expected to be operational by the first quarter of 2004. One of the major issues
Comby, David +2 more
openaire +2 more sources
Performance of the EGNOS system in Algeria for single and dual frequency
International Journal of Aviation, Aeronautics, and Aerospace, 2021 EGNOS (European Geostationary Navigation Overlay Service) transmits data for more accurate real time positioning with an integrity message for GNSS navigation satellites, which are in view by RIMS station (Ranging and Integrity Monitoring Stations ...
lahouaria Tabti +2 more
doaj +1 more source
Land Degradation &Development, Volume 34, Issue 16, Page 4823-4832, October 2023., 2023 Abstract The paper describes the transformation of the coastal landscape near former Davislaguna Lake, SE Spitsbergen. It is a comparative study which outlines the changing state of the area based on old maps, other archival materials, remote sensing data from the years 1900 to 2021, and our own fieldwork performed since 2005.
Wieslaw Ziaja +3 more
wiley +1 more source
IET Radar, Sonar &Navigation, Volume 17, Issue 5, Page 916-924, May 2023., 2023 (1) This work provides a fast graphic processing unit (GPU)‐based acquisition by using minimum loss and downsampling techniques (MLD) for weak BeiDou Satellite‐Based Augmentation System (BDSBAS) signals, which applies downsampling technique and GPU acceleration to achieve fast acquisition and introduce the minimum loss strategy to improve the peak ...
Chengyao Tang +4 more
wiley +1 more source
River Research and Applications, Volume 39, Issue 2, Page 266-273, February 2023., 2023 Abstract Widely available ‘fish‐finder’ echo‐sounding devices are beginning to be used in bathymetric studies to estimate geomorphic change. To date, however, there have been no applications in shallow and complex wetlands, where changes in sediment storage are notoriously dynamic in time and difficult to describe accurately in space.
Gareth Bradbury +4 more
wiley +1 more source
GPS‐SBAS‐Based Orbit Determination for Low Earth Orbiting Satellites
International Journal of Aerospace Engineering, Volume 2023, Issue 1, 2023., 2023 A space‐based augmentation system (SBAS) provides real‐time GNSS correction signals via geostationary satellites for near‐ground GNSS users. To use the SBAS correction for low Earth orbit (LEO) satellites, the correction, especially the ionosphere correction, must be adjusted for the LEO altitude.
Mingyu Kim +2 more
wiley +1 more source
Boreas, Volume 51, Issue 2, Page 299-316, April 2022., 2022 Lake‐level reconstructions are a key tool in hydro‐climate reconstructions, based on the assumption that lake‐level changes primarily reflect climatic changes. Although it is known that land cover changes can affect evapotranspiration and groundwater formation, this factor commonly receives little attention in the interpretation of past lake‐level ...
Martin Theuerkauf +10 more
wiley +1 more source
Analysis of the precision of determination of aircraft coordinates using EGNOS+SDCM solution [PDF]
Archives of Transport, 2023 This paper presents an algorithm for determining the precision parameter for aircraft position coordinates based on a combined GPS/EGNOS and GPS/SDCM solution. The proposed algorithm uses a weighted average model that com-bines a single GPS/EGNOS and GPS/
Kamil Krasuski +6 more
doaj +1 more source
Space Weather, Volume 20, Issue 2, February 2022., 2022 Abstract The determination of the ionospheric perturbation degree is essential to describe the ionosphere state for space weather monitoring. A new method for estimating the spatial and temporal components of the Vertical Total Electron Content (VTEC) gradient is introduced.
Qi Liu +7 more
wiley +1 more source
Galileo and EGNOS as an asset for UTM safety and security [PDF]
, 2019 GAUSS (Galileo-EGNOS as an Asset for UTM Safety and Security) is a H2020 project1 that aims at designing and developing high performance positioning systems for drones within the U-Space framework focusing on UAS (Unmanned Aircraft System) VLL (Very Low ...
Kostaridis, Antonis +7 more
core +2 more sources