Results 21 to 30 of about 5,765,436 (248)

Comparison Analysis on the Accuracy of Galileo PPP Using Different Frequency Combinations in Europe

open access: yesApplied Sciences, 2021
The Galileo constellations are characterized by transmitting GNSS signals on multi-frequencies, which can benefit the robustness and accuracy of the solutions.
Jia Song, Lewen Zhao
doaj   +1 more source

ACCURACY TESTING OF THE ONLINE FREE GNSS PPP SERVICES, AS A FUNCION OF OBSERVATION DURATION AND THE ELAPSED TIME FROM MEASUREMENT EPOCH TO EPOCH OF MEASUREMENT COMPUTATION [PDF]

open access: yesGeodetski Glasnik, 2011
Use of PPP has become possible since the advent of precise satellite ephemerides and clock corrections from IGS. This work represents a research in attainable accuracy and reliability of the free online GNSS services (APPS, CSRS, GAPS, magicGNSS ...
Denis Tabučić   +2 more
doaj   +1 more source

Tropospheric delay parameters from numerical weather models for multi-GNSS precise positioning [PDF]

open access: yesAtmospheric Measurement Techniques, 2016
The recent dramatic development of multi-GNSS (Global Navigation Satellite System) constellations brings great opportunities and potential for more enhanced precise positioning, navigation, timing, and other applications.
C. Lu   +6 more
doaj   +1 more source

Precise Point Positioning in the Airborne Mode [PDF]

open access: yes, 2011
The Global Positioning System (GPS) is widely used for positioning in the airborne mode such as in navigation as a supplementary system and for geo-referencing of cameras in mapping and surveillance by aircrafts and Unmanned Aerial Vehicles (UAV).
Ahmed El-Mowafy (9557050)
core   +3 more sources

FAST CONVERGING LIDAR-AIDED PRECISE POINT POSITIONING: A CASE STUDY WITH LOW-COST GNSS [PDF]

open access: yes, 2023
With the growing interest in autonomous driving, accurate vehicle positioning remains an open problem, especially in urban environments. According to regulatory organisations, the vehicle positioning accuracy is required to be centimetre-level.
J. Zhang   +5 more
core   +2 more sources

Assessment of the accuracy and convergence period of Precise Point Positioning

open access: yesAlexandria Engineering Journal, 2018
Precise Point Positioning (PPP) is a well-known positioning method that removes, models, or estimates GNSS system errors to reach the optimal position accuracy from a single receiver.
Mohammed Abou-Galala   +3 more
doaj   +1 more source

THE PERFORMANCE ANALYSIS OF THE POST-MISSION WEB-BASED STATIC AND KINEMATIC PPP-AR SERVICE

open access: yesRudarsko-geološko-naftni Zbornik, 2023
The use of the Precise Point Positioning (PPP) technique has become very advantageous with the development of GNSS positioning technology. It is possible to get highly accurate position information without the need of any reference station data using the
Bilal Mutlu   +2 more
doaj   +1 more source

The Study of Position Accuracy Using Precise Point Positioning (PPP) In Perspective of Indonesian National Standard of Horizontal Reference Network [PDF]

open access: yesE3S Web of Conferences, 2019
Precise point positioning is a GNSS based positioning method that is known to regaining more precise information about major systematical errors in its functional model.
Azis Rasyad A.   +2 more
doaj   +1 more source

Multi-GNSS Precise Point Positioning with UWB Tightly Coupled Integration

open access: yes, 2022
Global Navigation Satellite Systems (GNSSs) can provide high-precision positioning services, which can be applied to fields including navigation and positioning, autonomous driving, unmanned aerial vehicles and so on.
Ke Su   +3 more
core   +1 more source

Ionosphere-Constrained Single-Frequency PPP with an Android Smartphone and Assessment of GNSS Observations

open access: yesSensors, 2020
With the development of Global Navigation Satellite System (GNSS) and the opening of Application Programming Interface (API) of Android terminals, the positioning research of Android terminals has attracted the attention of GNSS community. In this paper,
Guangxing Wang   +5 more
doaj   +1 more source

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