The two MTG-I satellites will operate in tandem – one scanning the full Earth disc (including Europe and Africa) every 10 minutes, while the other will provide a local area coverage, for example covering only Europe, with a faster repeat cycle. At any point in time during the full mission deployment two MTG-I and one MTG-S satellite will be in orbit. To meet more than the 20-year operational life of the mission, the full MTG system comprises six satellites, four MTG-I and two MTG-S. The MTG-S accommodates the Infrared Sounder (IRS) instrument and Copernicus Sentinel-4.The MTG-I satellite accommodates the Flexible Combined Imager (FCI) instrument and Lightning Imager (LI).Both use a common three-axis stabilised platform, but with very different payload complements: ![]() By comparison, the instruments on the previous generation spinning satellites spent less than 5% looking towards the Earth.įor the overall MTG mission two types of satellite are being developed the Imaging satellite (MTG-I) and the Sounding Satellite (MTG-S). Rather than implementing a spinning satellite design adopted for the earlier Meteosats, the MTG satellites accommodate their state of the art instruments on a three-axis stabilised satellite platform, meaning that the orientation of the satellites remains fixed with respect to Earth, with the payloads looking continually at the Earth’s disc. To do this, the satellite design is based on a significantly different approach compared to the first two generations.
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