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2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI), 2021
Emanoel Costa, Bruno Vani
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Emanoel Costa, Bruno Vani
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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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Accuracy evaluation of Doresa and Milena Galileo satellites broadcast ephemerides
, 2018 On 22 August 2014 Doresa and Milena Galileo satellites were launched in wrong orbit. In November 2014 European space agency started a salvaged mission to make two satellites usable.
G Benassai +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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Validation of an Autonomous Multi-Satellite Navigation Filter Against Precision Orbit Ephemerides
ION GNSS+, The International Technical Meeting of the Satellite Division of The Institute of Navigation, 2020To prepare for various upcoming flight demonstrations of autonomous multi-satellite systems technology, Emergent Space Technologies performed a validation of its multi-satellite navigation filter, NAV, using real GPS data and precise post-processed orbits.
Jennifer King +2 more
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Status of the CNES precise orbit ephemerides for Sentinel-3A
2016The Sentinel-3A spacecraft was launched by the European Space Agency on February 16, 2016, to extend the continuous record of accurate sea surface height measurements performed on the polar Sun-synchronous orbit, begun in 1991 by the ERS mission and continued in 2002 by the Envisat mission.
Couhert, Alexandre +4 more
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An improved method for detecting BeiDou signal-in-space anomalies from precise ephemerides
Acta Geodaetica et Geophysica, 2019The signal-in-space (SIS) anomalies caused by satellites and control segments can greatly affect the reliability and safety of navigation and positioning users. The prior information associated with the failure of the Advanced Receiver Autonomous Integrity Monitoring (ARAIM) algorithm were obtained by the evaluation of SIS failure rates broadcasted ...
Lihong Fan +7 more
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High-Precision Ephemerides of Planets—EPM and Determination of Some Astronomical Constants
Solar System Research, 2005The latest version of the planetary part of the numerical ephemerides EPM (Ephemerides of Planets and the Moon) developed at the Institute of Applied Astronomy of the Russian Academy of Sciences is presented. The ephemerides of planets and the Moon were constructed by numerical integration in the post-Newtonian metric over a 140-year interval (from ...
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Icarus, 2010
Astrometric satellite positions are derived from timings of their eclipses in the shadow of Jupiter. The 548 data points span 20 years and are accurate to about 0.006 arcsec for Io and Europa and about 0.015 arcsec or better for Ganymede and Callisto.
Anthony Mallama +3 more
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Astrometric satellite positions are derived from timings of their eclipses in the shadow of Jupiter. The 548 data points span 20 years and are accurate to about 0.006 arcsec for Io and Europa and about 0.015 arcsec or better for Ganymede and Callisto.
Anthony Mallama +3 more
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Accuracy Assessment of Broadcast Ephemerides for Quasi-Zenith Satellite System
Lecture Notes in Electrical Engineering, 2018Chuang Jin, Chengpan Tang
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