The thesis presents static processing results of fieldwork GNSS observations performed in nearly ideal conditions. Three sessions of static observations were performed at the field by different combination of GNSS receivers’ usage at the end of the baselines. While obtaining observations the cut-off angle was set on 0°, but during the processing we simulated obstacles near GNSS receivers by increasing cut-off angle. We estimated how the obstacles influence the coordinates and tried to find the answer of which cut-off angle in the presence of obstacles could be negligible. We checked the effect of different types of ephemeris (broadcast and final precise) usage on final coordinate’s determination. Based on different strategy processing results, i.e. different sampling rate as well as shorter observation duration, we studied which factor has more influence on the coordinates’ quality. Coordinates acquired from relative post-processing were further used as the reference for studying the absolute PPP (Precise Point Positioning) post-processing results, where PPP coordinates were calculated by online applications MagicGNSS and TrimbleRTX. Finally, different coordinates were used in distances, horizontal angles and areas calculations to find out how different quality of coordinates affects indirect acquired quantities.