What is a satellite bus

Satellite technology

Four of these satellites are known as "imagers" and will deliver images that offer significantly improved image resolution. The other two satellites are called "sounders". They carry new types of high-resolution spectrometers that will help track the three-dimensional movement of water vapor and other gases in the atmosphere.

Once the MTG satellites are operational, their novel capabilities will enable much more accurate weather forecasting. Thus, for example, major storms with heavy rain can be predicted earlier and more precisely, air traffic can be planned better and more economically, and agriculture can better determine the optimal time of harvest. In addition, the measurements from the MTG satellites will improve our understanding of the earth's climate system, from which not only Europe will benefit.


The industrial consortium for the development of the MTG program is led by the French company Thales Alenia Space with OHB System AG as a partner. OHB System AG is responsible for the development of all six satellite platforms and also leads the development of all of the Sounder satellites.


In addition to its activities at the system level, OHB System is working on the instruments for MTG at the Munich location. OHB System AG is responsible for the entire development of the infrared sounder, the highly sophisticated imaging spectrometer that is the main instrument of the two sounder satellites. OHB System AG is also developing the telescope of the Flexible Combined Imager, which is the main instrument of the four imager satellites. Finally, OHB System AG is also part of the core team for developing the Sentinel 4 UVN instrument, which is financed from the GMES program of the European Union. Sentinel 4 is also carried by the two sounder satellites and is intended to measure pollutants in the atmosphere, among other things.