Proba-3 First Tandem Satellites
This groundbreaking mission is dedicated to showcasing cutting-edge technologies and techniques for highly precise satellite formation flying. Consisting of two small satellites launched together, Proba-3’s unique approach involves separating these satellites to fly in tandem, paving the way for future multi-satellite missions that can function as one cohesive virtual structure.
The challenges faced by current scientific and applications endeavors demand the detection of increasingly faint signals and smaller features. To meet these goals, satellite formation flying emerges as the solution. It allows for larger apertures, longer focal lengths, and baselines beyond the capabilities of a single spacecraft. The achievement of precise formation flying heralds a new era for science and applications, opening up possibilities for assembling future missions on a much larger scale. Applications of interest span Earth observation to in-orbit satellite servicing.
Proba-3 represents a significant leap forward in formation flying. Comprising two satellites – the Coronagraph spacecraft and the Occulter spacecraft – this mission achieves millimeter and arc-second precision at distances of 144 meters or more for six hours autonomously, without relying on ground guidance.
Launched together into a highly elliptical orbit in 2024, these satellites will conduct formation flying maneuvers and scientific observations, showcasing their prowess in maintaining a virtual giant satellite. The mission’s innovative techniques and simulators will not only be instrumental in future missions but will also validate key technologies essential for formation flying, making Proba-3 a pioneering space laboratory.