The first was from the European Space Agency (ESA) and the second from Leonardo. Each of the new G2S satellites, designed to provide unprecedented accuracy worldwide, will contain three Orolia https://www.orolia.com Rubidium Atomic Frequency Standards (RAFS) and two Orolia atomic clock physics packages integrated with Leonardo's Passive Hydrogen Masers (PHM).
Orolia CEO Jean-Yves Courtois said, “We are truly honoured to be selected by the European Commission, ESA and Leonardo to continue to supply our advanced space atomic clocks for the next generation of Galileo.
"Our dedication, hard work and innovative design for all the clocks in the current Galileo constellation have contributed to the most accurate GNSS system in service today. We look forward to continuing to support the Galileo program with the most advanced GNSS timing technology available in the world.”
Orolia said its RAFS is a rubidium atomic clock able to deliver a frequency stability of about 2x10-14 over averaging intervals of 10,000 seconds. The Leonardo PHM is the master clock for the Galileo satellite payload. The maser technology embedded on Galileo offers superior stability to all other types of clocks onboard navigation satellites.
Orolia says it has delivered more than 140 RAFS flight models worldwide, with 114 flying on GNSS constellations. In addition, 100 PHM flight models have been delivered worldwide, and 56 are flying on the current Galileo constellation.
According to ESA, the G2S satellites will revolutionise the Galileo constellation, joining the 26 first-generation satellites currently in orbit. They will be much larger than the existing Galileo satellites, use electric propulsion for the first time and feature a more powerful navigation antenna. The G2S constellation should achieve a decimeter-scale positioning precision.
In May, the European Commission and ESA announced the selection of Orolia to provide its Skydel GNSS signal simulation core engine for the G2S radio-frequency constellation simulator.
Orolia says this series of successes demonstrates the excellence of Orolia's PNT products and its leadership in GNSS technologies.
This first appeared in the subscription newsletter CommsWire on 9 September 2021.