Estimation of deformations of free geodetic networks by repeating measurements from unfixed stations

This article is dedicated to improving of modern deformations monitoring methods. Short review of actual deformation analysis methods is presented. Some points of improving of classic methods of geodetic monitoring are high-lighted. Some perspectivity of using computer technologies is shown. Actual method of free control network measurements is considered. It is proposed to use the so-called direct method of finding network deformations during repeated measurements, which consists in comparing the points’ coordinates during the transformation and superposition of two networks. Helmert transfor-mation formulae application is performed by computer iterations processing of transformation parameters. The general mathematics of the proposed method and the processing results of test measurements are given. The developed algorithm for processing the measurement results according to the proposed method has shown its ef-fectiveness. Some perspectives of method’s development are shown.