Statistical analysis of the results obtained with internet based gnss data evaluation software according to different configurations

Online GNSS (Global Positioning Satellite System) evaluation services are designed to quickly provide users with high-precision location information. These services provide users with access to precise coordinates in a short time. This thesis investigates the combination of web-based evaluation services and Precise Point Positioning (PPP) technology, focusing on the analysis of GNSS (Global Navigation Satellite System) data. The study is based on a large dataset including different satellite configurations, different ephemeris data, different data recording times, different weather conditions, and evaluations performed before and after earthquakes. PPP technology was used to position GNSS data with high accuracy. The results were then statistically evaluated using SPSS software and the impact of different parameters on the results was analyzed. In this study, it was found that web-based evaluation services are an effective method for GNSS data processing and precise positioning; different parameters such as satellite configurations, ephemeris data, data recording times, weather conditions and tectonic movements have significant effects on the results, and PPP technology is a powerful tool for high-precision processing of GNSS data.