Monitoring the Short-term Variations in the Stability of the Nigerian GNSS CORS Diurnal Coordinates

Positioning, based on GNSS reference network technology, is becoming a routine operation within and outside the spatial industry. The expanding user base diverse range of applications employing this technology can impose significant expectations providers services. In positioning navigation, requirement for high accurate coordinate estimates cannot be over-emphasized. This ensured by provision reliable corrections from zero-order stations. It therefore expedient to study diurnal coordinates such stations guarantee information navigation applications. study, observation data Nigerian permanent continuously operating located at different states around Nigeria was processed. hourly (daily) solutions obtained were analysed purpose monitoring short-term stability using two-year (2012-2013) test data. daily precise point results processed, analysed, presented as time series RTKPLOT. Python programming language used write custom modules visualize graphs 30 seconds epochs in order determine points where when condition defaulted. stations; FPNO, GEMB, MDGR found most stable Easting component; GEMB Northing component while Up station stable. outcome will assist detecting that are non-operational, performing PPP processing detect unstable, reporting experience sudden changes. developed module implemented operators an automated program setting up intelligent alert system trigger warning whenever there unexpected breach.