Lietuvos geodezinio tinklo horizontaliosios deformacijos

Abstract

Horizontal deformations of the Lithuanian geodetic network are evaluated according to the coordinate diferences of the triangulation network and the fundamental GPS network of Lithuania established in 1992- 1994. For the analysis of planimetric deformations of geometric forms the tensor analysis method was used. Triangles are taken as final elements (Fig 1). For characterization of network deformation D1 D2-independent perpendicular maximum and minimum lengthening of the principal deformations, φ-directions of maximum deformations, ω-triangle turning, Δ- dilatation, G1, G2-displacements of triangle centre according to coordinate axes, G-resultant vector modulus axes are calculated. The calculated results are shown in Table 1 and Fig 2.