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 ...

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, ...

Pocket-sized German satellite maker shoots for stars

Holding its own against aerospace giants like pan-European Airbus Space or French-Italian Thales Alenia, German minnow OHB has carved out a space as a national champion in satellite building.

Future space travelers may follow cosmic lighthouses

For centuries, lighthouses helped sailors navigate safely into harbor. Their lights swept across the water, cutting through fog and darkness, guiding mariners around dangerous obstacles and keeping them on the right path. ...

Image: Arm out to asteroid

This robotic arm, moving along a 33-m-long track, forms ESA's GNC Rendezvous, Approach and Landing Simulator, used to simulate close approach to targets such as drifting satellites or asteroids.

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Navigation

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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