
ESA's Navigation Directorate is planning a new satellite whose results will enable the generation of an updated global model of Earth - the International Terrestrial Reference Frame, employed for everything from land surveying to measuring sea level rise - with an accuracy down to 1 mm, while tracking ground motion of just 0.1 mm per year. This improvement, at a stroke, will have a major impact in multiple navigation and Earth science applications, including enhancing the precision of the Galile...
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