Results 21 to 30 of about 1,948,990 (331)

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

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   +1 more source

Health Big Data Classification Using Improved Radial Basis Function Neural Network and Nearest Neighbor Propagation Algorithm

open access: yesIEEE Access, 2019
Health big data classification can effectively improve the level of medical and health services and management, help medical staff to carry out auxiliary diagnosis, improve the efficiency of doctors and the accuracy of diagnosis.
Congshi Jiang, Yihong Li
doaj   +1 more source

Real-Time PPP-RTK Performance Analysis Using Ionospheric Corrections from Multi-Scale Network Configurations

open access: yesSensors, 2020
The long convergence time required to achieve high-precision position solutions with integer ambiguity resolution-enabled precise point positioning (PPP-RTK) is driven by the presence of ionospheric delays.
Dimitrios Psychas, Sandra Verhagen
doaj   +1 more source

Accuracy of Precise Point Positioning (PPP) with the use of different International GNSS Service (IGS) products and stochastic modelling [PDF]

open access: yesGeodesy and Cartography, 2018
This paper provides analyses of the accuracy and convergence time of the PPP method using GPS systems and different IGS products. The official IGS products: Final, Rapid and Ultra Rapid as well as MGEX products calculated by the CODE analysis centres ...
Damian Kiliszek   +2 more
doaj   +1 more source

Assessing the Performance of Precise Point Positioning (PPP) with the Fully Serviceable Multi-GNSS Constellations: GPS, BDS-3, and Galileo

open access: yesRemote Sensing, 2023
Nowadays, both BDS-3 and Galileo can provide global positioning and navigation services. This contribution carried out a comprehensive analysis and validation of positioning performance in terms of positioning accuracy (RMS) and convergence time, which ...
Zunyao Hou, Feng Zhou
doaj   +1 more source

A New Weighting Approach with Application to Ionospheric Delay Constraint for GPS/GALILEO Real-Time Precise Point Positioning

open access: yesApplied Sciences, 2018
The real-time precise point positioning (RT PPP) technique has attracted increasing attention due to its high-accuracy and real-time performance. However, a considerable initialization time, normally a few hours, is required in order to achieve the ...
Tianjun Liu   +4 more
doaj   +1 more source

External Tropospheric Corrections by Using Kriging Interpolation for Improving PPP-RTK Positioning Solutions

open access: yesRemote Sensing, 2022
With the availability of satellite carrier-phase delay corrections provided by a reference network or the International GNSS Service (IGS), the integer ambiguity resolution for a single receiver can be successfully achieved, which is the so-called PPP ...
Chuanfeng Song   +4 more
doaj   +1 more source

Error analysis of a space-time finite element method for solving PDEs on evolving surfaces [PDF]

open access: yes, 2013
In this paper we present an error analysis of an Eulerian finite element method for solving parabolic partial differential equations posed on evolving hypersurfaces in $\mathbb{R}^d$, $d=2,3$.
Olshanskii, Maxim A., Reusken, Arnold
core   +2 more sources

Iterative time reversal with tunable convergence [PDF]

open access: yesElectronics Letters, 2011
4 pages, 3 figures, published on Electronics ...
Taddese, Biniyam Tesfaye   +3 more
openaire   +2 more sources

On the Convergence of Ionospheric Constrained Precise Point Positioning (IC-PPP) Based on Undifferential Uncombined Raw GNSS Observations

open access: yesSensors, 2013
Precise Point Positioning (PPP) has become a very hot topic in GNSS research and applications. However, it usually takes about several tens of minutes in order to obtain positions with better than 10 cm accuracy.
Hongping Zhang   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy