Annotation

The problems of restoration of the stations of the national geodetic network and geodetic bringing networks in Ukraine are considered. The goal of the research is to analyze the quantitative characteristics of the NGN of Ukraine, to establish the causes for the long-term existence of the problem of restoring lost of stations in Ukraine and to develop proposals for its elimination.

The analysis of normative requirements for inspection, modernization, search and restoration of the lost stations of the national geodetic network of the country and bringing networks is performed. The analysis of possible reasons of destruction and damage of the stations is conducted. The consequence of the problem of the stations loss is the complexity of geodetic works. The time spent for searching the stations increases, and the distances of the initial stations from the objects of topographic surveying grow.

The degree of provision of the territory of Ukraine the stations of NGN for topographic surveys in scales of 1: 5000, 1: 10000 and 1: 25000 is estimated.

It is established that the density of the stations of planimetric NGN for topographic surveying on the territory of 20 regions has not been brought to the normative level. Therefore, the further losses of stations are not allowed. At the same time, in Dnipropetrovsk, Luhansk, Lviv, Odesa and Sumy regions, the discrepancy between the actual density and the normative density is a direct consequence of the loss of NGN stations.

The prospects for solving the problem of restoring the lost stations on the territory of Ukraine are determined.

To determine the allowable number of the lost stations of geodetic networks for each administrative-territorial unit singly on the basis of the analysis of the density of NGN stations and bringing networks is proposed.