The analysis of accuracy in obtaining geospace information while monitoring railway infrastructure objects by different methods such as geodesic, photogrammetric and remote sensing is carried out in the article. Tachymeter and global navigation satellite systems are used as geodesic methods. Aerial photography by means of unmanned aerial vehicles are referred to photogrammetric methods. Remote sensing was carried out on the basis of 3 D laser scanning technologies. The accuracy of performed measurements is considered for the scale 1:500.
Keywords: global navigation satellite systems, unmanned aerial vehicles, geospace information, accuracy of measurements, 3 D laser scanning, tachymeter