Results 11 to 20 of about 52,769 (226)

Relativistic positioning: four-dimensional numerical approach in Minkowski space-time [PDF]

, 2011
We simulate the satellite constellations of two Global Navigation Satellite Systems: Galileo (EU) and GPS (USA). Satellite motions are described in the Schwarzschild space-time produced by an idealized spherically symmetric non rotating Earth. The trajectories are then circumferences centered at the same point as Earth.
A. Cadez, B. Coll, B. Coll, B. Coll, B. Coll, B. Coll, B. Coll, B. Coll, B. Coll, B. Coll, C. Rovelli, D. Bini, D. Bunandar, Diego Sáez, E.W. Grafarend, J.S. Abel, J.W. Chaffee, K.M. Górski, N. Puchades, Neus Puchades, P. Delva, P. Teyssandier, R.O. Schmidt, T.B. Bahder, T.B. Bahder, W.H. Press   +25 more
arxiv   +3 more sources

Legal Aspects of European Satellite Navigation Systems in a Time of Change [PDF]

Studia Iuridica Lublinensia, 2023
Global Navigation Satellite System (GNSS) is an important tool in supporting innovation and developing the economy. The European Union has created two systems: Galileo and EGNOS (European Geostationary Navigation Overlay Service), which enable the ...
Zuzanna Kulińska-Kępa
doaj   +3 more sources

Probing the Flyby Anomaly with the future STE-QUEST mission [PDF]

Planetary and Space Science, Volumes 79-80, May 2013, Pages 76-81, 2012
In this study, we demonstrate that the flyby anomaly, an unexpected acceleration detected in some of the gravitational assists of the Galileo, NEAR, Cassini and Rosetta spacecraft, could be probed by accurate orbital tracking available in the proposed Space-Time Explorer and Quantum Equivalence Principle Space Test (STE- QUEST); following a recent work,
Hechenblaikner, Gerald, Páramos, Jorge
arxiv   +3 more sources

Assessing IGS GPS/Galileo/BDS-2/BDS-3 phase bias products with PRIDE PPP-AR

Satellite Navigation, 2021
Ambiguity Resolution in Precise Point Positioning (PPP-AR) is important to achieving high-precision positioning in wide areas. The International GNSS (Global Navigation Satellite System) Service (IGS) and some other academic organizations have begun to ...
Jianghui Geng, Songfeng Yang, Jiang Guo
doaj   +1 more source

Performance Assessment of BDS-2/BDS-3/GPS/Galileo Attitude Determination Based on the Single-Differenced Model with Common-Clock Receivers

Remote Sensing, 2021
Global navigation satellite system (GNSS)-based attitude determination has been widely applied in a variety of fields due to its high precision, no error accumulation, low power consumption, and low cost. Recently, the emergence of common-clock receivers
Mingkui Wu, Shuai Luo, Wang Wang, Wanke Liu   +3 more
doaj   +1 more source

Evalution of the Accuracy and Performance of Multi-GNSS (MGEX) Positioning for Long Baselines by Using Different Software [PDF]

Journal of Geodesy and Geoinformation Science, 2023
The Global Positioning System (GPS) is a GNSS constellation, but GNSS is not always GPS. GPS is one of the GNSS constellations used around the world. The GNSS constellations include GPS (US), QZSS (Japan), Beidou/BDS (China), Galileo (EU), and GLONASS ...
Atınç Pırtı, Mehmet Ali Yücel
doaj   +1 more source

Galileo Broadcast Ephemeris and Clock Errors Analysis: 1 January 2017 to 31 July 2020

Sensors, 2020
A preliminary analysis of Galileo F/NAV broadcast Clock and Ephemeris is performed in this paper with 43 months of data. Using consolidated Galileo Receiver Independent Exchange (RINEX) navigation files, automated navigation data monitoring is applied ...
María Teresa Alonso, Jaume Sanz, José Miguel Juan, Adrià Rovira García, Guillermo González Casado   +4 more
doaj   +1 more source

Real-time service performances of BDS-3 and Galileo constellations with a linear satellite clock correction models

Satellite Navigation, 2023
In order to facilitate high-precision and real-time Precise Point Positioning (PPP), the International GNSS (Global Navigation Satellite System) Service (IGS), BDS-3 (BeiDou-3 Navigation Satellite System), and Galileo navigation satellite system (Galileo)
Haojun Li, Danzeng Luojie, Huimin Ding
doaj   +1 more source

Performance evaluation of multi-GNSSs navigation in super synchronous transfer orbit and geostationary earth orbit

Satellite Navigation, 2021
The autonomous navigation of the spacecrafts in High Elliptic Orbit (HEO), Geostationary Earth Orbit (GEO) and Geostationary Transfer Orbit (GTO) based on Global Navigation Satellite System (GNSS) are considered feasible in many studies.
Tao Shi, Xuebin Zhuang, Liwei Xie
doaj   +1 more source

Testing Galileo High-Accuracy Service (HAS) in Marine Operations

Journal of Marine Science and Engineering, 2023
Global Navigation Satellite System (GNSS) technology supports all phases of maritime navigation and serves as an integral component of the Automatic Identification System (AIS) and, by extension, Vessel Traffic Service (VTS) systems.
Pedro Pintor, Manuel Lopez-Martinez, Emilio Gonzalez, Jan Safar, Ronan Boyle   +4 more
doaj   +1 more source