caa a22 4500 60616264X CHVBK 20210128100640.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s10291-014-0390-8 doi (NATIONALLICENCE)springer-10.1007/s10291-014-0390-8 Broadcast versus precise ephemerides: a multi-GNSS perspective [Elektronische Daten] [Oliver Montenbruck, Peter Steigenberger, André Hauschild] A 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 1year of broadcast ephemeris messages of the Global Positioning System (GPS), GLONASS, Galileo, BeiDou and QZSS collected with a near-global receiver network. Position and clock values derived from the navigation data are compared against precise orbit and clock products provided by the International GNSS Service and its multi-GNSS experiment. Satellite laser ranging measurements are used for a complementary and independent assessment of the orbit-only SISRE contribution. The need for proper consideration of antenna offsets is highlighted and block-/constellation-specific radial antenna offset values for the center-of-mass correction of broadcast orbits are derived. Likewise, the need for application of differential code biases in the comparison of broadcast and precise clock products is emphasized. For GPS, the analysis of the legacy navigation message is complemented by a discussion of the CNAV message performance based on the first CNAV test campaign in June 2013. Global average SISRE values for the individual constellations amount to 0.7±0.02m (GPS), 1.5±0.1m (BeiDou), 1.6±0.3m (Galileo), 1.9±0.1m (GLONASS), and 0.6±0.2m (QZSS) over a 12-month period in 2013/2014. Springer-Verlag Berlin Heidelberg, 2014 Orbit and clock errors nationallicence SISRE nationallicence MGEX nationallicence SLR nationallicence CNAV nationallicence Antenna offsets nationallicence Montenbruck Oliver German Space Operations Center, Deutsches Zentrum für Luft- und Raumfahrt, 82230, Weßling, Germany aut Steigenberger Peter German Space Operations Center, Deutsches Zentrum für Luft- und Raumfahrt, 82230, Weßling, Germany aut Hauschild André German Space Operations Center, Deutsches Zentrum für Luft- und Raumfahrt, 82230, Weßling, Germany aut GPS Solutions Springer Berlin Heidelberg 19/2(2015-04-01), 321-333 1080-5370 19:2<321 2015 19 10291 https://doi.org/10.1007/s10291-014-0390-8 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10291-014-0390-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Montenbruck Oliver German Space Operations Center, Deutsches Zentrum für Luft- und Raumfahrt, 82230, Weßling, Germany aut NATIONALLICENCE 700 1- Steigenberger Peter German Space Operations Center, Deutsches Zentrum für Luft- und Raumfahrt, 82230, Weßling, Germany aut NATIONALLICENCE 700 1- Hauschild André German Space Operations Center, Deutsches Zentrum für Luft- und Raumfahrt, 82230, Weßling, Germany aut NATIONALLICENCE 773 0- GPS Solutions Springer Berlin Heidelberg 19/2(2015-04-01), 321-333 1080-5370 19:2<321 2015 19 10291