Results 171 to 180 of about 788,278 (206)
Real-Time Cycle Slip Detection in Single-Frequency GNSS Receivers Using Dual-Index Cross-Validation and Elevation-Dependent Thresholding. [PDF]
Sensors (Basel)Carvajal Librado M, Park KD.
europepmc +1 more source
Precise Point Positioning With GPS and Galileo Broadcast Ephemerides [PDF]
GPS Solutions, 2021 AbstractFor more than 20 years, precise point positioning (PPP) has been a well-established technique for carrier phase-based navigation. Traditionally, it relies on precise orbit and clock products to achieve accuracies in the order of centimeters. With the modernization of legacy GNSS constellations and the introduction of new systems such as Galileo,
André Hauschild +2 more
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Continuous Precise Ephemerides for Beidou-2 Maneuvered Satellites Based on a New Thrust Force Model [PDF]
Advances in Space Research, 2019 Abstract Beidou geostationary earth orbit (GEO) and inclined geosynchronous orbit (IGSO) satellites are frequently maneuvered to keep them in the designed orbits by thrust forces. As the thrust forces are generally unknown, precise satellite orbits are difficult to be determined during maneuver periods.
Wu Chen, Jing Qiao
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The Orbit of Triton With New Precise Observations and the INPOP19a Ephemeris
Astronomy and Astrophysics, 2020 Aims. The Gaia catalogue brings new opportunities and challenges to high-precision astronomy and astrometry. The precision of data reduction is therefore improved by a large number of reference stars with high-precision positions and proper motions ...
Kai Tang, Y Z Song, R C Qiao
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The quality of precise glonass ephemerides
Advances in Space Research, 2002Abstract To set up a global observation network, and to get experience in modelling GLONASS satellite orbits have been identified as key issues of the International GLONASS Experiment (IGEX), proposed in the late 1997. Thus in October 1998 the official IGEX field campaign was launched as a common effort of more than 60 institutions contributing to ...
R. Weber, E. Fragner
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GPS positioning with broadcast and precise ephemerides
SICE '95. Proceedings of the 34th SICE Annual Conference. International Session Papers, 2002The precise ephemeris and space vehicle clock corrections computed routinely by the International GPS Service for Geodynamics (IGS) under the International Association of Geodesy (IAG) is accurate to less than submeter. Since the precise orbit/clock is free from selective availability (SA) errors, accurate point positioning and orbit determination can ...
M. Murata, M. Harigae, T. Tsujii
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Broadcast versus precise ephemerides: a multi-GNSS perspective
GPS Solutions, 2014A consistent analysis of signal-in-space ranging errors (SISREs) is presented for all current satellite navigation systems, considering both global average values and worst-user-location statistics. The analysis is based on 1 year of broadcast ephemeris messages of the Global Positioning System (GPS), GLONASS, Galileo, BeiDou and QZSS collected with a ...
Montenbruck, Oliver +2 more
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On the precision estimation of fundamental planetary ephemerides
Kinematics and Physics of Celestial Bodies, 2014Precision analysis of the random errors of the heliocentric planetary and geocentric Lunar positions calculated with the DELE423, Inpop 10e, EPM2011, VSOP2013 ephemerides is presented.
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Precise Real-Time Navigation of LEO Satellites Using a Single-Frequency GPS Receiver and Ultra-Rapid Ephemerides [PDF]
Aerospace Science and Technology, 2017 25 pages, 6 figures, Ready for publication in Aerospace Science and Technology ...
Pei Chen, Xiucong Sun
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