Space to help build a green post-pandemic economy

ESA has several green initiatives to foster economic recovery from the coronavirus pandemic while promoting clean living and digital transformation. They seek to use disruptive technologies to transform urban green areas, ...

Time transfer performance of BDS-3 satellites improved

Time transfer technology based on navigation satellites started in the 1980s. The conventional common view (CV), all-in-view (AV) and precise point positioning (PPP) time comparison methods based on global navigation satellite ...


Navigation is the process of monitoring and controlling the movement of a craft or vehicle from one place to another. It is also the term of art used for the specialized knowledge used by navigators to perform navigation tasks. All navigational techniques involve locating the navigator's position compared to known locations or patterns.

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