GNSS signals are affected when solar activity causes sudden variations in the density of the ionosphere. Few studies concentrate on positioning performance of IGS stations using different GNSS receivers under different geomagnetic storm conditions. This paper for the first time presents IF and UC PPP positioning performance of stations with different receivers during the quiet, moderate, intense, and super storms period. Firstly, a comprehensive investigation of geomagnetic storms effects on the occurrence of GPS cycle-slip and PPP positioning performance have been presented. Secondly, the influences of geomagnetic storms on the occurrence of cycle-slip and IF PPP positioning performance for stations using receivers provided by ‘JAVAD’, ‘LEICA’, and ‘TRIMBLE’ manufacturers have been comprehensively studied. Finally, this study investigates the geomagnetic storms effects on IF PPP positioning performance of stations using receiver types ‘JAVAD TRE_G3TH DELTA’, ‘JAVAD TRE_3 DELTA’, ‘LEICA GR25’, and ‘TRIMBLE NETR9’ by analysing observed data collected at mid-latitude region.

当太阳活动导致电离层密度突然变化时，GNSS 信号会受到影响。很少有研究关注在不同地磁风暴条件下使用不同 GNSS 接收器的 IGS 站的定位性能。本文首次展示了不同接收机在安静、中度、强烈和超级风暴期间的IF和UC PPP定位性能。首先，全面研究了地磁暴对 GPS 周跳发生和 PPP 定位性能的影响。其次，全面研究了地磁暴对使用“JAVAD”、“LEICA”和“TRIMBLE”厂商提供的接收机的电台的周跳和IF PPP定位性能的影响。最后，