Latitudinal, Diurnal, and Seasonal Variations in the Accuracy of an RTK Positioning System and Its Relationship With Ionospheric Irregularities

The Norwegian Mapping Authority operates a network real time kinematic (RTK) system called CPOS, positioning service providing centimeter level accuracy aimed at commercial users, for example, in civil engineering, excavation, and surveying. CPOS is based on multiple Global Navigation Satellite Systems (multi-GNSS) addition to base stations provide correction data. position subject disturbances arising from space weather phenomena, which can disturb disrupt GNSS signals. Studies have shown that performance sensitive the presence of plasma irregularities, usually quantified by rate change total electron content index (ROTI). This study investigates over 3-year period, its relationship with ionospheric irregularities. In statistical analysis, we observe errors seasonal, diurnal, latitudinal variations. most frequent occur around magnetic noon are moderate severity, while largest night-time, agreeing well climatology studies scintillations. Additionally, investigate irregularities as characterized TEC We find there significant correlation between ROTI, but also other contributing factors.