Results 11 to 20 of about 97,106 (244)
Assessment of BeiDou-3 and Multi-GNSS Precise Point Positioning Performance [PDF]
Sensors, 2019 With the launch of BDS-3 and Galileo new satellites, the BeiDou navigation satellite system (BDS) has developed from the regional to global system, and the Galileo constellation will consist of 26 satellites in space. Thus, BDS, GPS, GLONASS, and Galileo
Guoqiang Jiao +4 more
doaj +2 more sources
Precise Point Positioning Using Triple GNSS Constellations in Various Modes [PDF]
Sensors, 2016 This paper introduces a new dual-frequency precise point positioning (PPP) model, which combines the observations from three different global navigation satellite system (GNSS) constellations, namely GPS, Galileo, and BeiDou.
Akram Afifi, Ahmed El-Rabbany
doaj +2 more sources
Precise Point Positioning Using World’s First Dual-Frequency GPS/GALILEO Smartphone [PDF]
Sensors, 2019 The release of the world’s first dual-frequency GPS/Galileo smartphone, Xiaomi mi 8, in 2018 provides an opportunity for high-precision positioning using ultra low-cost sensors. In this research, the GNSS precise point positioning (PPP) accuracy of
Abdelsatar Elmezayen, Ahmed El-Rabbany
doaj +2 more sources
Modeling and Assessment of GPS/BDS Combined Precise Point Positioning [PDF]
Sensors, 2016 Precise Point Positioning (PPP) technique enables stand-alone receivers to obtain cm-level positioning accuracy. Observations from multi-GNSS systems can augment users with improved positioning accuracy, reliability and availability.
Junping Chen +5 more
doaj +2 more sources
GPS/GLONASS Combined Precise Point Positioning with Receiver Clock Modeling [PDF]
Sensors, 2015 Research has demonstrated that receiver clock modeling can reduce the correlation coefficients among the parameters of receiver clock bias, station height and zenith tropospheric delay.
Fuhong Wang, Xinghan Chen, Fei Guo
doaj +2 more sources
Real-Time Single Frequency Precise Point Positioning Using SBAS Corrections [PDF]
Sensors, 2016 Real-time single frequency precise point positioning (PPP) is a promising technique for high-precision navigation with sub-meter or even centimeter-level accuracy because of its convenience and low cost. The navigation performance of single frequency PPP
Liang Li +5 more
doaj +2 more sources
GPS precise point positioning for UAV photogrammetry [PDF]
Photogrammetric Record, 2018 AbstractThe use of Global Positioning System (GPS) precise point positioning (PPP) on a fixed‐wing unmanned aerial vehicle (UAV) is demonstrated for photogrammetric mapping at accuracies of centimetres in planimetry and about a decimetre in height, from flights of 25 to 30 minutes in duration.
Jon Mills, Nigel Penna
exaly +3 more sources
A Worldwide Ionospheric Model for Fast Precise Point Positioning
IEEE Transactions on Geoscience and Remote Sensing, 2015 Fast precise point positioning (Fast-PPP) is a satellite-based navigation technique using an accurate real-time ionospheric modeling to achieve high accuracy quickly. In this paper, an end-to-end performance assessment of Fast-PPP is presented in near-maximum Solar Cycle conditions; from the accuracy of the Central Processing Facility corrections, to ...
Jaume Sanz +2 more
exaly +4 more sources
Performance Analysis of Several GPS/Galileo Precise Point Positioning Models [PDF]
Sensors, 2015 This paper examines the performance of several precise point positioning (PPP) models, which combine dual-frequency GPS/Galileo observations in the un-differenced and between-satellite single-difference (BSSD) modes.
Akram Afifi, Ahmed El-Rabbany
doaj +2 more sources
Combined GPS/GLONASS Precise Point Positioning with Fixed GPS Ambiguities [PDF]
Sensors, 2014 Precise point positioning (PPP) technology is mostly implemented with an ambiguity-float solution. Its performance may be further improved by performing ambiguity-fixed resolution.
Lin Pan +3 more
doaj +2 more sources