UDC 528.4
CSCSTI 67.21
The proposals on the use of local coordinate systems of the subjects of the Russian Federation to ensure urban planning and operational activities, as well as geodynamic studies of natural and man-made phenomena on the territory of the city (karst and landslide-prone territories) are analyzed. Insufficient accuracy of local coordinate systems of the subjects of the Russian Federation is shown and a conclusion is made about the need to develop special urban geodetic networks of increased accuracy. The history of the creation of the Nizhny Novgorod city geodetic network is considered and the experience of the development of its reconstruction project is presented, in which the boundaries of the territory of the geodetic network functioning, the analysis of the accuracy of geodetic support in the city, the calculation of the accuracy of the creation of a special geodetic network for the placement of differential geodetic stations, as well as the calculation of the accuracy of geodetic support for consumers in the city and related territories based on new technological solutions. A variant of the connection of the points of the city geodetic network of Nizhny Novgorod with the state geodetic network (permanent points of the fundamental astronomical and geodetic network) is considered and an accuracy assessment is performed. The presented version of the urban geodetic network reconstruction project ensures the accuracy of the mutualposition of points that meets the requirements of geodynamic studies of karst and landslideprone territories.
geodetic coordinate systems, geodetic networks, urban geodetic works, urban geodetic network
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