Abstract:In order to study the characteristics of BDS carrier phase multipath, the BDS/GPS observation data of a short baseline is collected in a strong multipath environment and the repeatability of GEO, IGSO and MEO satellites are analyzed respectively using the double differenced observation residual series. Furthermore, the effects of BDS multipath on static baseline solutions are studied. The results show that BDS multipath errors have a strong repeatability, but the multipath repeat periods differ for distinctive types of satellite. The multipath repeat periods of GEO and IGSO satellites are approximately a sidereal day, while it is around seven sidereal days for the MEO satellites. The multipath errors of GEO satellites present a nearly systematic shift; not a constant, but slow, change. They cannot be mitigated by smoothing using long observation time, because the effects of BDS multipath errors on static baseline solutions could reach the centimeter level in a strong multipath environment.
SHI Qiang,DAI Wujiao,ZENG Fanhe et al. The Characteristics of BDS Carrier Phase Multipath and Its Effects on Static Baseline Solution[J]. jgg, 2016, 36(10): 874-878.