Results 71 to 80 of about 1,482 (190)

REAL TIME PPP APPLIED TO AIRPLANE FLIGTHT TESTS [PDF]

, 2019
The availability in real time of GNSS satellites orbits, clock corrections and code and phase biases provided the possibility of application of Real Time Precise Point Positioning (RTPPP).
de Souza, Mauricio Cardoso, Marques, Haroldo Antonio, Monico, João Francisco Galera, Oyama, Rogerio Takeshi, Queiroz, William Robson Silva de, Tsuchiya, Italo, Wentz, Jens Peter   +6 more
core   +4 more sources

Real‐Time Regional Ionosphere Modeling With RFR‐Net Over China

Space Weather, Volume 23, Issue 8, August 2025.
Abstract The mid‐to‐low‐latitude ionosphere, influenced by phenomena such as the Equatorial Ionization Anomaly, responds more sensitively to changes in solar activity, which negatively affect the transmission of various electromagnetic signals. Moreover, next‐generation technologies, particularly Precise Point Positioning‐Real‐Time Kinematic (PPP‐RTK),
Mengfei Sun, Tong Liu, Zonghua Ding, Jian Liu, Yanshi Huang, Kun Zhang, Shengliang Fang, Shizhong Li, Qinglei Kong, Bo Chen   +9 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  

Review of code and phase biases in multi-GNSS positioning [PDF]

, 2016
A review of the research conducted until present on the subject of Global Navigation Satellite System (GNSS) hardware-induced phase and code biases is here provided. Biases in GNSS positioning occur because of imperfections and/or physical limitations in
A Al-Shaery, A Leick, A Tetewsky, Anna B. O. Jensen, B Hoffman-Wellenhof, C Cai, C Deng, D Laurichesse, D Odijk, E Sardon, GE Lanyi, Gunnar Hedling, H He, J Chen, J Geng, J Kouba, J Paziewski, J Tegedor, J-M Sleewaegen, JF Zumberge, JM Dow, L Wanninger, M Ge, Martin Håkansson, Milan Horemuz, P Collins, P Teunissen, PJG Teunissen, PJG Teunissen, S Banville, S Banville, S Chuang, S Gleason, W Bertiger, X Li, Y Gao   +35 more
core   +1 more source

Integer Ambiguity Resolution for Multi-GNSS and Multi-Signal Raw Phase Observations [PDF]

, 2020
The continuous modernisation of existing Global Navigation Satellite Systems (GNSS) and the development of new systems with a multitude of different carrier frequencies and a variety of signal modulations creates a true multi-GNSS and multi-signal ...
Reckeweg, Florian
core   +1 more source

A Multi-Epoch Processing Strategy for PPP-RTK Users

, 2023
AbstractThe present contribution aims to address why the stochastic model of the PPP-RTK user-filter is misspecified, and how one can limit the precision-loss associated with user parameter solutions. By developing tools for measuring the stated precision-loss under existing formulations of the user’s Kalman filter, we propose an alternative ...
Khodabandeh, A, Teunissen, PJG, Psychas, D   +2 more
openaire   +2 more sources

Co‐Ordinated Observations of Multi‐Scale Irregularities Using ICEBEAR and GNSS During the May 2024 Superstorm

Space Weather, Volume 23, Issue 8, August 2025.
Abstract We present observations of plasma structuring from three meters up to hundreds of kilometers at auroral latitudes during the extreme geomagnetic storm of May 2024 using co‐ordinated observations from ICEBEAR and Global Navigation Satellite Systems (GNSS) receivers. Intense irregularities on all spatial scales co‐existed for about 4 hr between ∼
Mahith Madhanakumar, Andres Spicher, Devin Ray Huyghebaert, Anton Kashcheyev, Luca Spogli, Kjellmar Oksavik, Magnus F. Ivarsen, Juha Vierinen, Glenn C. Hussey   +8 more
wiley   +1 more source

Towards PPP-RTK: Ambiguity resolution in real-time precise point positioning [PDF]

Advances in Space Research, 2011
Abstract Integer ambiguity resolution at a single station can be achieved by introducing predetermined uncalibrated phase delays (UPDs) into the float ambiguity estimates of precise point positioning (PPP). This integer resolution technique has the potential of leading to a PPP-RTK (real-time kinematic) model where PPP provides rapid convergence to a
Geng, J., Teferle, Felix Norman, Meng, X., Dodson, A. H.   +3 more
openaire   +2 more sources

Robust Kalman Filter Aided GEO/IGSO/GPS Raw-PPP/INS Tight Integration

Sensors, 2019
Reliable and continuous navigation solutions are essential for high-accuracy location-based services. Currently, the real-time kinematic (RTK) based Global Positioning System (GPS) is widely utilized to satisfy such requirements.
Zhouzheng Gao, You Li, Yuan Zhuang, Honglei Yang, Yuanjin Pan, Hongping Zhang   +5 more
doaj   +1 more source

Design of a Low-cost GPS/magnetometer System for Land-based Navigation: Integration and Autocalibration Algorithms [PDF]

, 2011
The land-based navigation, paying attention to precision farming, is the research topic: the final purpose is the design and development of a guidance-aided system focusing on a low-cost GPS receiver able to provide a ...
Biagi, Ludovico, CAPRA, Alessandro, CASTAGNETTI, Cristina   +2 more
core