Results 21 to 30 of about 19,876 (292)
A new approach for optimising GNSS positioning performance in harsh observation environments [PDF]
, 2014 Maintaining good positioning performance has always been a challenging task for Global Navigation Satellite Systems (GNSS) applications in partially obstructed environments.
Alan Dodson +10 more
core +3 more sources
GNSS jamming resilience for close to shore navigation in the Northern Sea [PDF]
, 2016 avigational error accounts for half of the accidents and serious incidents in close to shore maritime transport in Norway predominantly due to the rapidly changing weather conditions and the dangerous nature of the narrow inshore waters found along the ...
Bonenberg, Lukasz, Glomsvoll, Oeystein
core +1 more source
Accuracy assessment of Precise Point Positioning with multi-constellation GNSS data under ionospheric scintillation effects [PDF]
, 2018 GPS and GLONASS are currently the Global Navigation Satellite Systems (GNSS) with full 16 operational capacity. The integration of GPS, GLONASS and future GNSS constellations can 17 provide better accuracy and more reliability in geodetic positioning, in
Aquino +29 more
core +8 more sources
Multi-constellation GNSS scintillation at mid-latitudes [PDF]
2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS), 2017 Radio wave scintillation can result in severe channel fading and random phase variations that can interfere with the performance of a radar, communication or GPS system. While it is well known that Ionospheric scintillation occurs within the high and low latitude regions, there has been minimal research done within the middle latitudes. However, recent
Marc H. Jean +2 more
openaire +1 more source
Influence of station density and multi-constellation GNSS observations on troposphere tomography [PDF]
Annales Geophysicae, 2019 Troposphere tomography, using multi-constellation observations from global navigation satellite systems (GNSSs), has become a novel approach for the three-dimensional (3-D) reconstruction of water vapour fields.
Q. Zhao, K. Zhang, K. Zhang, W. Yao
doaj +1 more source
Research on Satellite Selection Strategy for Receiver Autonomous Integrity Monitoring Applications
Remote Sensing, 2021 Satellite selection is an effective way to overcome the challenges for the processing capability and channel limitation of the receivers due to superabundant satellites in view.
Huibin Wang +4 more
doaj +1 more source
Multi‐constellation ARAIM exploiting satellite motion
NAVIGATION, 2020 In this work, a new time-sequential positioning and fault detection method is developed for dual-frequency, multi-constellation Advanced Receiver Autonomous Integrity Monitoring (ARAIM). Unlike conventional “snapshot” ARAIM, sequential ARAIM exploits changes in satellite geometry at the cost of slightly higher computation and memory loads.
Mathieu Joerger, Boris Pervan
openaire +1 more source
Multi-Ground Station Collaborative Measurement and Control Technology for Giant Constellation System
天地一体化信息网络, 2023 Measurement and control technology is the key technology to ensure the effi cient operation, maintenance and management of the constellation system.In recent years, with the continuous expansion of the constellation scale, mega-constellation system has ...
Yang LIU +5 more
doaj +2 more sources
Intelligent Load Balancing Algorithm of Mega Constellation
天地一体化信息网络, 2023 To overcome the local traffic congestion caused by the huge number of satellites in mega-constellation, a load balancing algorithm based on multi-agent deep reinforcement learning was proposed.Firstly, the satellites in the mega constellation were ...
Shuxin LUO +3 more
doaj +2 more sources
Sensors, 2018 Vehicles driving in urban canyons are always confronted with a degraded Global Navigation Satellite System (GNSS) signal environment. The surrounding obstacles may cause signal reflections or blockages, which lead to large multipath noises and ...
Wei Li +4 more
doaj +1 more source