COMPASSO mission and its iodine clock: outline of the clock design

0579345 - ÚPT 2025 RIV DE eng J - Článek v odborném periodiku
Kuschewski, F. - Wüst, J. - Oswald, M. - Blomberg, T. - Gohlke, M. - Bischof, J. - Boac, A. - Alam, T. - Bußmeier, A. - Abich, K. - Röder, N. - Döringshof, K. - Hrabina, Jan - Holá, Miroslava - Oulehla, Jindřich - Schuldt, T. - Braxmaier, C.
COMPASSO mission and its iodine clock: outline of the clock design.
GPS Solutions. Roč. 28, č. 1 (2024), č. článku 10. ISSN 1080-5370. E-ISSN 1521-1886
Institucionální podpora: RVO:68081731
Klíčová slova: COMPASSO * GNSS * Galileo * Optical clock * Modulation transfer spectroscopy * Absolute frequency reference
Impakt faktor: 4.9, rok: 2022
Způsob publikování: Open access
https://link.springer.com/article/10.1007/s10291-023-01551-0

One of the limiting factors for GNSS geolocation capabilities is the clock technology deployed on the satellites and the knowledge of the satellite position. Consequently, there are numerous ongoing efforts to improve the stability of space-deployable clocks for next-generation GNSS. The COMPASSO mission is a German Aerospace Center (DLR) project to demonstrate high-performance quantum optical technologies in space with two laser-based absolute frequency references, a frequency comb and a laser communication and ranging terminal establishing a link with the ground station located in Oberpfaffenhofen, Germany. A successful mission will strongly improve the timing stability of space-deployable clocks, demonstrate time transfer between different clocks and allow for ranging in the mm-range. Thus, the technology is a strong candidate for future GNSS satellite clocks and offers possibilities for novel satellite system architectures and can improve the performance of scientific instruments as well. The COMPASSO payload will be delivered to the international space station in 2025 for a mission time of 2 years. In this article, we will highlight the key systems and functionalities of COMPASSO, with the focus set to the absolute frequency references.
Trvalý link: https://hdl.handle.net/11104/0348184