Today, with the quick development and changing of the space geodesy and satellite techniques, opportunities for choosing and using GNSS increased, many satellite systems are available and ready to use. At present using Differential Global Navigation Satellite System (DGNSS) for different purposes are so common and attracts many users, especially for surveying and mapping applications. Therefore, comparing the use of GPS only and combined GPS + GLONASS for RTK and static methods in accuracy is important. The aim of this study is to compare Global Positioning System GPS only and GPS+GLONASS when using Real Time Kinematic (RTK) and static methods. For this purpose, a field work was performed with 14 test points using RTK method and 3 test points using rapid static method. Measurements were performed for both GPS only and GPS + GLONASS. Finally, the position qualities were compared. Leica Geo office software was used for data processing, and Leica Viva GS15 was used as instrument. Also the benefits and challenges of a combined GPS and GLONASS system for post-processed static and RTK methods were identified.
