The experience of using unmanned aerial vehicles to create a cartographic basis for GIS of roads
The presented work describes the possibility of using UAVs to create a cartographic basis of roads for inventory, monitoring purposes and management decisions with the accuracy required. This work considers steps of making an orthophotoplan based on the data obtained by UAVs. The technical characteristics of the work are given and the accuracy of the data is estimated. The main purpose of this work is to compare geodetic (by means of total station) and photogrammetric technologies (by means of UAVs) of making a cartographic basis and to give recommendations on the use of these technologies for information support of complex works on roads. Based on the study, the following results are drawn: geodetic technology provides the required accuracy in urban areas especially to the buildings and a special permission to work in large cities is not necessary, whereas the photogrammetric technology reduces the time of field work and the number of workers. The photogrammetric technology allows obtaining data at remote districts and hard access areas. Although the process of photogrammetric data processing is well automated, the requirement for the machine technical capacity is rough. Taking into account the results of the study it is stated that in urban areas it is preferable to use geodetic technology and in open areas the photogrammetric technology is more suitable.