caa a22 4500 606162100 CHVBK 20210128100637.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s10291-014-0369-5 doi (NATIONALLICENCE)springer-10.1007/s10291-014-0369-5 IGS RTS precise orbits and clocks verification and quality degradation over time [Elektronische Daten] [Tomasz Hadas, Jaroslaw Bosy] The International GNSS Service (IGS) real-time service (RTS) provides access to real-time precise products such as orbits, clocks and code biases, which can be used as a substitute for ultra-rapid products in real-time applications. The true performance of these products can be assessed by the Analysis Centers daily statistics derived from the comparison with IGS rapid products. Additionally, indirect verification is performed by their application to various precise point positioning strategies. Monitoring results and basic descriptions of these products are available at the official RTS Web page ( http://rts.igs.org/ ). We present a more detailed description of RTS products. Information from various sources is collected to provide products application methodology and describe their important features. We provide extended verification of the products using 1week of real-time correction data. Results are presented separately for GNSS constellations, considering satellite block and type of onboard clock. Comparison with ESA/European Space Operations Centre final products proves the high accuracy of RTS orbits and clocks, which is 5cm for GPS orbits, 8cm for GPS clocks, 13cm for GLONASS orbits and 24cm for GLONASS clocks. The real-time correction performance is also examined regarding availability and latency. In general, the availability of corrections was beyond 95% for GPS and beyond 90% for GLONASS. Since the increasing degradation of product quality with latency is critical for real-time applications, the relation between product latency and accuracy is analyzed. It confirms that high-rate stream update intervals are suitable for the data provided and that the obsolete data should not be used. To avoid this, we propose a method of short-term prediction of RTS corrections that extends the application period of obsolete correction data without a significant loss in orbit quality. Using polynomial fitting, it is possible to forecast the orbit corrections reliably up to 8min for GPS and 4min for GLONASS. The Author(s), 2014 GNSS nationallicence IGS RTS nationallicence Real-time nationallicence Precise orbit and clock corrections nationallicence Short-time prediction nationallicence PPP nationallicence Hadas Tomasz Institute of Geodesy and Geoinformatics, Wroclaw University of Environmental and Life Sciences, Grunwaldzka 53, 50-357, Wrocław, Poland aut Bosy Jaroslaw Institute of Geodesy and Geoinformatics, Wroclaw University of Environmental and Life Sciences, Grunwaldzka 53, 50-357, Wrocław, Poland aut GPS Solutions Springer Berlin Heidelberg 19/1(2015-01-01), 93-105 1080-5370 19:1<93 2015 19 10291 https://doi.org/10.1007/s10291-014-0369-5 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/s10291-014-0369-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hadas Tomasz Institute of Geodesy and Geoinformatics, Wroclaw University of Environmental and Life Sciences, Grunwaldzka 53, 50-357, Wrocław, Poland aut NATIONALLICENCE 700 1- Bosy Jaroslaw Institute of Geodesy and Geoinformatics, Wroclaw University of Environmental and Life Sciences, Grunwaldzka 53, 50-357, Wrocław, Poland aut NATIONALLICENCE 773 0- GPS Solutions Springer Berlin Heidelberg 19/1(2015-01-01), 93-105 1080-5370 19:1<93 2015 19 10291