Phase Center Corrections for BDS IGSO and MEO Satellites in IGb14 and IGSR3 Frame

As pre-launch antenna calibrations are not available for GPS and GLONASS satellites, the high correlation between terrestrial scale phase center offset (PCO) prevents a reliable estimation of with GNSS (Global Navigation Satellite System) technology. Fortunately, ground calibrated PCO values Galileo, BeiDou navigation satellite system (BDS), QZSS have been released, making possible. In third reprocess (repro3) International Service (IGS), derived has used. To evaluate consistency from BDS-released PCOs as well Galileo-released ones, to incorporate BDS into IGS repro3 operational legacy analysis, variations (PCV) medium earth orbit (MEO) inclined geostationary (IGSO) satellites estimated be consistent GPS/GLONASS offsets in two frames, i.e., IGb14 R3, considering robot receiver models released by Geo++. We observe that average Z-PCOs achieves +98.8 mm official frame BDS-3 MEO whereas Z-PCO is about +174.1 (about −1.27 ppb at height satellites) solutions IGSR3 frame. The evaluated boundary disclosures (OBD) global station coordinates. benefits PCO/PCV estimates, particularly BDS-2 which 3D RMS (root mean square) OBD reduced 50%, 90.0 satellites. Moreover, bias BDS-derived coordinates +0.446 ± 0.153 +0.012 0.112 using estimates IGb14, instead values. Additionally, residuals heights (after Helmert transformation) slightly 9.65 8.62 mm. On other hand, +0.226 0.175 observed BDS-only coordinate initial combination. These results demonstrate inconsistency Galileo +1.854 0.191 ppb, good PCO/PCC systems GPS/ achieved.