Coordination of information, objects in unified space is one of most topical processes due to creation of diverse information systems. It is particularly topical for coordination in the field and depiction on maps of environment objects and of objects created of humans. Unified coordinate reference system is necessary for this. This is prescribed also by data themes „Coordinate reference systems” of Annex I of European directive on globalization of space, establishment of unified reference space – INSPIRE directive, (14.03.2007 directive 2007/2/EK). The author of the doctoral theses carried out researches on the use of GPS in precise geodesy – world-wide and in the national level. Study was carried out on technologies enabling the performance of measurements with accuracy of centimeters in a large territory, e.g., in the territory of Latvian State. As literature and available information was investigated, it was decided to establish the national GPS base station system with data processing and distribution servers that provide coordinate determination with centimeters accuracy in the entire Latvia, providing homogeneous coordinate determination with post-processing – classically and also in real time, obtaining momentary result.