The study of permanent state satellite networks and triangulation points is carried out in the article. During field research, the error of determining coordinates and distances by satellite methods was studied as they moved away from the reference station based on the materials of the authors' research works in the Samarkand region. The construction of a network of reference stations is a new technology based on the use of satellite facilities, in order to increase accuracy for solving geodetic support.

This article presents the results of the conducted field research of two electronic total station, included in the park of geodetic devices performing geodetic work. The article is written on the materials of research work that the authors carried out in the Samarkand region of the Bulungur reference satellite geodetic test site. Electronic total stations, along with receivers for Global Navigation Satellite Systems (GNSS), are now among the most popular tools for surveying and geodesy. One of the important requirements of users to these geodetic instruments is the accuracy of their measurements, on which the accuracy of the surveying and geodesy work performed depends. The studies were carried out on a specialized reference geodetic network, approved for such tests, which is a reference tool for metrological certification of geodetic instruments.