The basic aim is to contribute to the world geodetic space in line with today’s scientific achievements. Riga geodynamic site is a thankful place for this, as it has long-term SLR observations and the longest GNSS records in Latvia. The goal is establishment of regional long-term geodetic monitoring station at LU Institute of Astronomy, Riga, Kandavas street 2, by joining at least two space geodetic technologies – the already installed laser-telescope LS-105 and GNSS − collocated, but not sufficiently linked. The capability of geodetic GNSS observations would uniquely complement Riga GNSS station and allow to determine more accurate coordinates of the LS-105 laser telescope and the long-term changes needed to accurately measure the positions of Earth satellites and other similar space objects. GNSS Observation Station will contribute to the development of positioning and position long-term change to accuracy of less than 1mm, one of the current global goals of GGOS. We plan to solve the problem with the exact position of the telescope LS-105 it will contribute to the development of scientific research and applied potential of the LU Satellite Laser Ranging station. From the national point of view geodetic station serves as an important point for Latvian National Geodetic Network, long term large infrastructure planning, engineering communications, cartography, etc. From a global perspective the station will be one of very few such stations in the region and the only one in the Baltics capable of valuable contribution to ITRF network. Preparatory work for the study has started by selecting and consolidating geodetic points for further measurements.

Meaning of application of technologies of geodetical and cartographic works in the processes of state border demarcation works shall be considered as the first main technical position in the course of their practical realization and maintains its importance also in further border maintenance measures. On 21 February, 1994, the agreement was concluded in order to determine Latvian-Belarussian state border, Mixed Border Demarcation Commission was formed. In 2015, Latvia concluded with Belarus State Border Regime Agreement, where they agreed on maintenance of the joint border. As every geodetic system, also it accrues deviations from the original parameters. It is stated that the earlier established system does not comply not only with requirements of completion of works of contemporary geodesy, but also with criteria determined during the establishment. The study concerns Latvian-Belarussian state border in the framework of fulfilment of the concluded border maintenance agreement 2016-2018.