Nowadays in the functions of a land cadastre, the use of GNSS technology in determining point positions is absolutely essential. In appropriate conditions for carrying out a GNSS survey, the positions of the points can be directly determined using various surveying methods of the GNSS survey. In situations where the signals from the GNSS satellites cannot be received due to obstacles, we can set up reference points using the GNSS, than we can use conventional surveying methods for determination of the positions in the reference coordinate system. Our thesis focuses on the practical use of the various GNSS surveying methods when trying to determine the coordinates of land cadastre points of two land plots with determined boundaries. We compared the coordinates obtained with different GNSS methods and with a combination of GNSS and conventional surveys. For the comparison, we used the coordinates obtained through processing observations of the static GNSS surveys as reference. Based on these, we established the quality of coordinate determining with other
methods. Furthermore, we used the differently obtained coordinates to calculate the surface area and evaluated the impact of the coordinate quality on the calculated surface area. We found out, that it is essential to repeat the RTK measurements three times, because if done only once, the position of the points can be determined falsely due to external influences on the observation. In turn, that can also result in an incorrectly calculated surface area. Our thesis identified that, in determining the coordinates, a mistakes of just a few decimetres can lead to a far bigger mistake of 14m2 (0,18%) in the surface area calculations.
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