caa a22 4500 606162445 CHVBK 20210128100639.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s10291-014-0423-3 doi (NATIONALLICENCE)springer-10.1007/s10291-014-0423-3 BeiDou satellite-induced code pseudorange variations: diagnosis and therapy [Elektronische Daten] [Lambert Wanninger, Susanne Beer] Code pseudorange measurements of the Chinese GNSS BeiDou reveal variations which result in code-phase divergences of more than 1m. We have analyzed these delay variations based on observation data of the International GNSS Service and its Multi-GNSS Experiment campaign. Our results confirm that these code variations are elevation-dependent when observed by receiving antennas on the earth's surface. In addition, we found significant differences between two groups of satellites and among carrier frequencies. These delay variations have only little effects on absolute BeiDou positioning using broadcast ephemerides due to the limited accuracy of the obtainable positions. But, all precise applications which use code measurements are severely affected. These applications include, e.g., certain algorithms used in Precise Point Positioning (PPP), especially PPP ambiguity fixing and single-frequency PPP based on the ionosphere-free code-carrier combination. We developed a correction model and determined correction parameters in order to accommodate these symptoms. Application examples demonstrate the successful mitigation of these code pseudorange variations. The Author(s), 2014 BeiDou nationallicence Code pseudorange nationallicence Multipath combination nationallicence Precise Point Positioning nationallicence Wanninger Lambert Geodätisches Institut, Technische Universität Dresden, 01062, Dresden, Germany aut Beer Susanne Geodätisches Institut, Technische Universität Dresden, 01062, Dresden, Germany aut GPS Solutions Springer Berlin Heidelberg 19/4(2015-10-01), 639-648 1080-5370 19:4<639 2015 19 10291 https://doi.org/10.1007/s10291-014-0423-3 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/s10291-014-0423-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wanninger Lambert Geodätisches Institut, Technische Universität Dresden, 01062, Dresden, Germany aut NATIONALLICENCE 700 1- Beer Susanne Geodätisches Institut, Technische Universität Dresden, 01062, Dresden, Germany aut NATIONALLICENCE 773 0- GPS Solutions Springer Berlin Heidelberg 19/4(2015-10-01), 639-648 1080-5370 19:4<639 2015 19 10291