LitPOS (Lithuanian Positioning System), the network of permanent reference GNSS stations, became operational in July 2007. It provides data both for real-time and post-processing applications. LitPOS stations cover the whole territory of Lithuania. Total number of LitPOS GNSS stations is 25. LITPOS users can use 3 ASG-EUPOS Polish stations and 2 LATPOS Latvian stations. It is possible on the basis of cooperation inEUPOS® project. European Position Determination System(EUPOS®) project is an initiative and cooperation of currently 17 Central and Eastern European countries (CEE) and Berlin that build up a ground-based European regional GNSS augmentation system with uniform standards that will cover a territory of about 10 million square kilometers.
LitPOS is a part of EUPOS® for territory of Lithuania. EUPOS® provides a high-quality differential GNSS information for high-precision positioning and navigation usable in a large field of applications.
Main developers of the LitPOS are:
·          National Land Service under the Ministry of Agriculture – financial support and supervising;
·          Private company “GPS Systems Baltija” – software and hardware;
·          State enterprise “Infostrukt?ra”, private company “FIMA” – infrastructure (dedicated Intranet lines, electric power supply);
·          Institute of Geodesy of Vilnius Gediminas Technical University – acting as overall coordinator and LitPOS operator.
Objectives of LitPOS:
·          to foster the implementation of GNSS techniques in Lithuania;
·          to support a broad spectrum of GNSS based applications in positioning and navigation;
·          to economize precise geodetic and cadastral surveying and to bring better comfort to surveyors;
·          to provide the “24/7/365” real time positioning service with national-wide coverage;
·          to harmonize the national geodetic infrastructure with the European Union countries and to facilitate the implementation of European Terrestial Reference System and European Vertical System.