The article considers the accuracy of floor models creation in large span structures with the use of unmanned aerial vehicles for the purpose of determining their deformations. There were performed 4 aero shootings of Water Sports Palace in Dushambe, which were processed by SIFT algorithm. Syn-chronically with the UAV shooting there was performed the measurements on deformation marks within the frames of geodetic monitoring. There was performed the statistical analysis of models accu-racy by method of interpolation of spherical function, which showed that 80% of points has devia-tions less than 30 mm, and the rest 20% has deviations up to 80 mm. The use of collocation method for smoothing optimal filtering allowed to decrease the differences between settlement surfaces ob-tained by geodetic measurement and UAV shooting up to 26mm., which is 10 % of acceptable devia-tions of this object. It was found out that there is a necessity of further investigations of SIFT algo-rithm and filtering its results for the purpose of increasing the accuracy of object’s models.
The article draws the estimation of geodetic measurement results and conclusions, obtained at observation of deformations during the construction and exploitation of large span structure with bridging of space shell type, located on the territory with hazardous natural and seismic processes and hot climate. On the basis of measurement results of the vertical and horizontal deformation constituents the analysis of actual behavior of the constructions in these conditions was performed. Estimating the deformations on different stages and environmental parameters one can set critical parameters and tolerance for the behavior of a real spatial metal structure. The article draws the data of three observation cycles carried out during the construction process and three ones performed after the start of operation. The observations allowed making a conclusion that the structure undergoes little appropriate deformations, which correspond to the designed ones.
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