Determination of control network accuracy and coordinates of control points in facade surveying

Abstract

The paper presents ways to determine the positions of control points with electronic total stations of varying accuracy from 1 to 5 seconds with and without reflectors at the sighting points, depending on the degree of vertical and horizontal positioning to the control points located at a distance of 50 m. It provides accuracy parameters of points in a high-order control network, containing root-mean-square positioning errors, the resultant error, the sizes and orientations of the semiaxes of the error ellipses and root-mean-square positioning error distributions. The paper considers an algorithm for performing facade surveying.