Results 11 to 20 of about 5,569,552 (285)

Single-Frequency Precise Point Positioning Using Regional Dual-Frequency Observations

open access: yesSensors, 2021
High-precision and low-cost single-frequency precise point positioning (SF-PPP) has been attracting more and more attention in numerous global navigation satellite system (GNSS) applications.
Junping Zou, Ahao Wang, Jiexian Wang
doaj   +2 more sources

Displacement monitoring performance of relative positioning and Precise Point Positioning (PPP) methods using simulation apparatus [PDF]

open access: yesAdvances in Space Research, 2019
Abstract Besides the classical geodetic methods, GPS (Global Positioning System) based positioning methods are widely used for monitoring crustal, structural, ground etc., deformations in recent years. Currently, two main GPS positioning methods are used: Relative and Precise Point Positioning (PPP) methods.
Alcay, S.   +3 more
core   +5 more sources

A-PPP: Array-Aided Precise Point Positioning With Global Navigation Satellite Systems [PDF]

open access: yesIEEE Transactions on Signal Processing, 2012
In this paper, the global navigation satellite system (GNSS) precise point positioning (PPP) concept is generalized to array-aided PPP (A-PPP). A-PPP is a measurement concept that uses GNSS data, from multiple antennas in an array of known geometry, to realize improved GNSS parameter estimation (position, attitude, time and atmospheric delays).
Teunissen, Peter
openaire   +4 more sources

Factor Graph Based Precise Point Positioning (PPP) Framework [PDF]

open access: yes
This work presents a utilization of the factor graph optimization approach on Precise Point Positioning (PPP) navigation. While PPP solutions already achieves high precision (~ 20 cm), their performance can degrade under multiple simultaneous faults or sensor degradation.
Uyanik, Hakan   +2 more
openaire   +3 more sources

Evaluation of BDS-3 B1C/B2b Single/Dual-Frequency PPP Using PPP-B2b and RTS SSR Products in Both Static and Dynamic Applications

open access: yesRemote Sensing, 2022
The BeiDou Global Navigation Satellite System (BDS-3) can provide PPP-B2b satellite-based Precise Point Positioning (PPP) real-time service to the Asia–Pacific region via PPP-B2b signal transmitted from the three Geostationary Earth Orbit (GEO ...
Ruohua Lan   +5 more
doaj   +1 more source

Comprehensive Analyses of PPP-B2b Performance in China and Surrounding Areas

open access: yesRemote Sensing, 2022
BeiDou Global Navigation Satellite System (BDS-3) provides a regional Precise Point Positioning (PPP) service, called PPP-B2b, for users in China and surrounding areas through B2b signal transmitted from its three geostationary earth orbit (GEO ...
Yan Liu, Cheng Yang, Mengni Zhang
doaj   +1 more source

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

Investigation of positioning performance of precise point positioning (PPP) technique in woodland areas using CSRS-PPP software [PDF]

open access: yes, 2023
GNSS teknolojisi, orman kaynaklarının araştırılması ve izlenmesi için güçlü bir araç haline gelmiştir. Ancak, ormanlık/ağaçlık alanlarda orman örtüsü GNSS sinyalleri ve uydu sayısı üzerinde olumsuz etkiye sahiptir.
Konakoğlu, Berkant, Şenses, Serhat
core   +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

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