Results 61 to 70 of about 1,523 (198)

An analytical study of PPP-RTK corrections: precision, correlation and user-impact [PDF]

, 2015
PPP-RTK extends the PPP concept by providing single-receiver users, next to orbits and clocks, also information about the satellite phase and code biases, thus enabling single-receiver ambiguity resolution.
A Lannes, A Lannes, A. Khodabandeh, B Hofmann-Wellenhof, B Li, B Zhang, D Odijk, D Odijk, D Odijk, DA Grejner-Brzezinska, DA Grejner-Brzezinska, G Blewitt, HV Henderson, J Geng, J Geng, JF Zumberge, M Ge, P Wielgosz, P. J. G. Teunissen, PJG Teunissen, PJG Teunissen, PJG Teunissen, PTG Teunissen, S Banville, S Loyer, S Verhagen, W Bertiger, X Li, X Li, X Zhang   +29 more
core   +1 more source

Characterizing the Role of Storm‐Time High‐Latitude Ionospheric Structures in GPS Position Accuracy in Antarctica: May 2024 Storm

Space Weather, Volume 24, Issue 4, April 2026.
Abstract This study investigates the impact of high‐latitude ionospheric irregularities on global positioning system (GPS) position accuracy during the 10–11 May 2024 geomagnetic storm. Using data from ground‐based GPS receivers and an all‐sky camera in Antarctica, we examined evolution of GPS vertical total electron content, phase fluctuations, and ...
Waqar Younas, Yukitoshi Nishimura, Weixuan Liao, Josh L. Semeter, Sebastijan Mrak, Y. Jade Morton, Keith M. Groves, Tetsuo Motoba, Tim Everett   +8 more
wiley   +1 more source

Tightly coupled multi-frequency PPP-RTK/INS integration model and its application in an urban environment

Geo-spatial Information Science
The Precise Point Positioning-Real Time Kinematic (PPP-RTK) technique, which provides centimeter-level positioning with instantaneous ambiguity resolution, is considered as a potential tool for intelligent vehicle applications.
Hang Zhu, Yibin Yao, Xiongwei Ma, Qi Zhang   +3 more
doaj   +1 more source

A new official PPP-RTK positioning service for Germany

, 2023
The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
Vennebusch, M., Riedel, F., Freitag, M., Goetze, T., Goldan, H., Meißies, M., Reiling, R., Schneider, V., Siebert, J., Winter, V., Gerschwitz, A., Jahn, C., Riecken, J., Rülke, A.   +13 more
openaire   +2 more sources

PERFORMANCE EVALUATION OF LOW-COST PRECISION POSITIONING METHODS FOR FUTURE PORT APPLICATIONS [PDF]

, 2021
In recent times, a lot of research has been conducted to improve the accuracy of various positioning systems. The motivation behind this trend is to ensure high quality GNSS services for various applications.
Onyebuchi, Dalbert
core  

RTK-Quality Positioning With Global Precise Point Positioning Corrections

Navigation, 2023
Global navigation satellite system (GNSS) precise point positioning (PPP) has potential as an alternative or replacement for real-time kinematic (RTK) processing.
Nacer Naciri, Sunil Bisnath
doaj   +1 more source

Characterizing North‐South Ionospheric Gradients During Geomagnetic Storms: A Variogram Enhancement for Wide Area Ionospheric Models

Space Weather, Volume 24, Issue 1, January 2026.
Abstract The intensified solar maximum of Cycle 25 has heightened space weather risks to Global Navigation Satellite Systems (GNSS), where geomagnetic storms critically challenge Positioning, Navigation, and Timing (PNT) availability. Current wide‐area ionospheric models may fail to resolve extreme latitudinal Total Electron Content (TEC) gradients ...
Tong Liu, Yiping Jiang, Bo Chen, Jian Liu, Yufang He, Wu Chen   +5 more
wiley   +1 more source

Regional Medium‐Scale Traveling Ionospheric Disturbance Propagation Model Based on BDS GEO Satellites

Space Weather, Volume 24, Issue 1, January 2026.
Abstract Accurate modeling of traveling ionospheric disturbances (TIDs) is essential for characterizing their spatiotemporal variations and mitigating their effects on Global Navigation Satellite System (GNSS) precise positioning. This study develops a regional medium‐scale TID (MSTID) propagation model using BeiDou geostationary orbit (GEO) total ...
Dengkui Mei, Xiaohong Zhang, Xiaodong Ren, Xuan Le, Wentao Yang, Ahmed Abdelaziz   +5 more
wiley   +1 more source

A Study of Standalone GNSS Positioning Precision in Covered Agricultural Environments: ETFE Polytunnels Versus Glass Greenhouses

IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
The paper presents an experimental study of the standalone positioning performance of a high‐end survey grade and a mass‐market dual‐frequency GNSS receiver in covered agricultural environments (CAEs) comparing an ETFE polytunnel and a Cambridge‐style glass greenhouse against an open‐field baseline.
Alex Schofield, Jasmine Zidan, Raphael Grech, Esther Anyaegbu, Emilio Loo‐Monardez, Paul A. Jennings, Matthew D. Higgins   +6 more
wiley   +1 more source

Novel non-contact deformation health monitoring of towers and rotating composite based wind turbine blades using interferometric ground-based radar [PDF]

, 2018
This paper describes the use of non-contact quasi monostatic ground-based radar (GBR) for system health monitoring (SHM) of the blades of wind turbines.
Hancock, Craig Matthew, Le Kernec, Julien, Ochieng, Francis Xavier, Roberts, Gethin Wyn, Tang, Xu   +4 more
core