Geographical infrastructure

DTU Space contributes towards developing new measurement and navigation technology that can be used in conjunction with traditional methods. Here, the geodetic reference system is an important standard.

In particular, the growing use of GPS places demands on the geographical infrastructure, as position fixing is obtained with the help of satellites orbiting the Earth.

There must be a close correlation between GPS positions and both geographical maps and charts. When taking particularly precise measurements, scientists must make allowances for the movement of the continents to ensure this correlation. DTU Space carries out measurements using permanent GPS stations and participates in international projects with a view to increasing the accuracy of future reference systems.

Satellite-based Earth observation also requires that measurements are carried out using the geodetic reference system. Furthermore, the orbits and positions of satellites must be determined with centimetre-level accuracy so that monitoring of the sea level and the surface of the ice caps can be carried out with the necessary degree of precision. Finally, standards regulating the exchange and storage of data are an important part of the geographical infrastructure.