Türkiye's indigenous Rubidium Atomic Frequency Standard (RAFS), which is of critical importance for the Regional Positioning and Timing System, has been successfully launched into space as part of the SpaceX Transporter-17 mission. Initial signals from the spacecraft have been successfully received.
Precision Time with 6.8 Billion Oscillations Per Second
Atomic clocks measure time with extremely high precision by referencing the fixed oscillation frequencies between the energy levels of atoms and electrons. At the heart of the RAFS, the rubidium atom oscillates between different energy levels exactly 6,834,682,610 times per second. This astronomical precision forms the backbone of numerous critical systems, from satellite navigation to communications infrastructure.
Led by TUA, with TÜBİTAK UME as Prime Contractor
The RAFS was developed under the leadership of the Turkish Space Agency (TUA), with TÜBİTAK National Metrology Institute (UME) as prime contractor, in collaboration with TÜBİTAK UZAY and İTÜNOVA. The atomic clock, which will be validated in the space environment on board a CubeSat, represents a significant milestone in the development of Türkiye's indigenous capabilities in space-based timing and frequency technologies.
The project is stated to be a critical infrastructure component for the Regional Positioning and Timing System, which is among the strategic objectives of the National Space Programme. The data to be obtained will provide valuable gains for high-precision atomic clock technologies that can be used in future satellite systems, communications infrastructure, navigation applications and scientific space missions.
Why is Atomic Clock Technology Critical?
Atomic clocks form the foundation of GPS and similar global positioning systems. A satellite's ability to determine its position with metre-level precision depends on the onboard atomic clock operating accurately to within a billionth of a second. The indigenous development of the RAFS means that a critical threshold has been crossed on Türkiye's path towards establishing its own regional positioning system. The atomic clock, which will contribute to numerous critical technologies ranging from communications to navigation, scientific research and satellite systems, also holds strategic importance for precision timing requirements in the defence industry.
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