Abstract
This article presents the results of GNSS and laser measurements at the “Tavaksay” geodynamic polygon. Describes the classical methods for determining the change in coordinates based on triangulation and leveling. Ways to improve the accuracy of local microplate tectonics using navigation systems are outlined here.The coordinates of the benchmarks were calculated in the rectangular GaussKruger coordinate system and the spatial system B, L, H for CK42 and WGS84.The trilateration method for determining the distances between points of the geodynamic network is analyzed. An assessment of the accuracy of the coordinates of points and the distances between them, depending on the number of measurement cycles, has been made.The accuracy of the trilateration and GNSS method for this network is graphically presented. The diagonal elements of the covariance matrix of GNSS measurements are investigated. It is proposed to make homogeneous GNSS and laser measurements at the tops of the hills at a certain time interval to study local deformation processes.
Highlights
The use of modern information and digital technologies in geodesy has led to the determination of the values of tidal deformations and the movement of masses in the upper layers of the earth's crust [1]
The problem is that geodetic, seismic, geophysical and GNSS measurements in Uzbekistan are carried out by specialized organizations that belong to different supervising departments and ministries
Based on the results of navigation and laser measurements, the coordinates of the points were obtained in the rectangular Gauss-Kruger coordinate system and the spatial spherical system B, L, H
Summary
The use of modern information and digital technologies in geodesy has led to the determination of the values of tidal deformations and the movement of masses in the upper layers of the earth's crust [1]. Such processes directly change the coordinate basis of the geodetic network, which must be taken into account when calculating coordinates. Considering the still unpredictable earthquakes, which affect the accuracy of determining the coordinates of points of the geodetic network, the task becomes more complicated These minor changes (1-3 cm per year) can only be detected using special satellite systems. Electronic and laser scanners have become widely used to determine the sides of geodetic networks
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