Assessing IGS GPS/Galileo/BDS-2/BDS-3 phase bias products with PRIDE PPP-AR

Abstract Ambiguity Resolution in Precise Point Positioning (PPP-AR) is important to achieving high-precision positioning wide areas. The International GNSS (Global Navigation Satellite System) Service (IGS) and some other academic organizations have begun provide phase bias products enable PPP-AR, such as the integer-clock like by Centre National d’Etudes Spatials (CNES), Wuhan University (WUM) Center for Orbit Determination Europe (CODE), well Uncalibrated Phase Delay (UPD) School of Geodesy Geomatics (SGG). To evaluate these disparate products, we carry out Global System (GPS)/Galileo (Galileo) BeiDou (BDS-only) PPP-AR using 30 days data 2019. In general, over 70% 80% GPS Galileo ambiguity residuals after wide-lane corrections fall ± 0.1 cycles, contrast less than 50% (Regional) (BDS-2); moreover, around 90% GPS/Galileo narrow-lane are within while percentage drops about 55% case BDS products. daily can usually achieve a precision 2, 2 6 mm east, north up components, respectively, all except those based on German Research Geosciences (GBM) rapid satellite orbits clocks. Due insufficient number satellites during 2019, perform worse terms fixing rates precisions. BDS-2 positions only reach 10 horizontal 20 vertical which be slightly improved PPP-AR. However, year 2020, BDS-2/BDS-3 (BDS-3 achieves better precisions three coordinate components.