Results 31 to 40 of about 101,629 (318)

The Real-Time Detection of Vertical Displacements by Low-Cost GNSS Receivers Using Precise Point Positioning. [PDF]

open access: yesSensors (Basel)
Vertical displacements are traditionally measured with precise levelling, which is inherently time consuming. Rapid or even real-time height determination can be achieved by the Global Navigation Satellite System (GNSS).
Maciejewska A   +3 more
europepmc   +2 more sources

Assessment of BeiDou-3 and Multi-GNSS Precise Point Positioning Performance [PDF]

open access: yesSensors, 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 on the Reliable Detection of Tropospheric Model Errors. [PDF]

open access: yesSensors (Basel), 2020
Precise point positioning (PPP) is one of the well-known applications of Global Navigation Satellite System (GNSS) and provides precise positioning solutions using accurate satellite orbit and clock products. The tropospheric delay due to the neutral atmosphere for microwave signals is one of the main sources of measurement error in PPP.
Ma H, Verhagen S.
europepmc   +7 more sources

Precise Point Positioning Using Triple GNSS Constellations in Various Modes [PDF]

open access: yesSensors, 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

Enhanced precise point positioning for GNSS users

open access: yesIEEE Transactions on Geoscience and Remote Sensing, 2012
This paper summarizes the main results obtained during the development of an Enhanced Precise Point Positioning (EPPP) Global Navigation Satellite Systems multifrequency user algorithm.
Samson, Jaron   +11 more
core   +4 more sources

GPS/GLONASS Combined Precise Point Positioning with Receiver Clock Modeling [PDF]

open access: yesSensors, 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

Precise Point Positioning Using World’s First Dual-Frequency GPS/GALILEO Smartphone [PDF]

open access: yesSensors, 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]

open access: yesSensors, 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 precise point positioning for UAV photogrammetry [PDF]

open access: yesThe Photogrammetric Record, 2018
The 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 ...
Penna, Nigel T.   +3 more
core   +6 more sources

Real-Time Single Frequency Precise Point Positioning Using SBAS Corrections [PDF]

open access: yesSensors, 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

Home - About - Disclaimer - Privacy