Mongolia, situated in the heart of the Asian Continent and is one of the largest landlocked countries in the world. To the north lies the Russian border and to the south, west and east the Peoples Republic of China. Mongolia has the  considerable land area of approximately 1,566,500 sq. km, home to around 2.5 million people living at the remarkably low density of 1.4 persons per sq km.

The Mongolian GPS network consists of 34 stations and one GPS station serving approximately 49000 sq. km. The GPS network survey was founded on existing second order triangulation points to estimate seven parameter datum coefficients between WGS-84 and local system Krassovsky. This has resulted in an established, high accuracy GPS network with ITRF connection in Mongolia.

The GPS network survey project has been carried out and financed by MonMap Engineering Services Ltd, in cooperation with the Mongolian Ministry of Defense. The GPS network survey measurements are produced by Trimble 4000 Ssi receivers and processed using Trimble GPS survey (version 2.3) and Trimnet Plus software. The GPS network survey work executed according to the following document which is published by Federal Geodetic Control Committee, USA: Geometric Geodetic Accuracy Standards and Specifications for GPS Relative positioning Techniques, 1989 and Final Draft Geospatial Positioning Accuracy Standards Part 2: Standards for Geodetic Networks by Federal Geographic Data Committee Secretariat, April, 1998.

The adjustments were made for a GPS network including 34 domestic and 7 international ITRF 96 solutions (epoch l997.83). The accuracy of the GPS network adjustment shows the Mongolian GPS network meets the centimeter level accuracy classification.