SAPOS NW High-Precision Real-Time Positioning Service (HEPS)

The satellite positioning service of the German national survey SAPOS offers comprehensive access to official spatial reference through centimeter-accurate positioning via GNSS (Global Navigation Satellite Systems) in the ETRS89 reference system. The satellite positioning service of the German national survey SAPOS is based on a network of reference stations that permanently evaluate satellite signals from the Global Positioning System (GPS) and Russian Globalnaya nawigazionnaya sputnikovaya Sistema (GLONASS). The corrective data for the Global Navigation Satellite Systems (GNSS) are provided for differential GNSS measurement methods. SAPOS® HEPS enables real-time position determination with a position accuracy of 1 to 2 cm and a height accuracy of 2 to 3 cm. The scope of application is the centimeter-accurate measurement, e.g. for real estate cadastres, layouts or measurements.