COMPASSO: In-orbit Verification of Optical Key Technologies for Future GNSS

Schmidt, Tobias D.; Schlüter, Stefan; Schuldt, Thilo; Gohlke, Martin; Calvo, Ramon Mata; Lüdtke, Daniel; Dauth, Matthias; Lezius, M.; Michaelis, Christian; Brzoska, Andrej; Steimle, Christian

doi:10.33012/2022.18286

Cited by 4 publications

(6 citation statements)

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“…New concepts for future Global Navigation Satellite Systems (GNSS) are being developed, such as the DLR´s Kepler architecture concept, based on optical frequency references (OFRs) and bi-directional laser links for ranging [11].…”

Section: Navigation: Compassomentioning

confidence: 99%

“…The project started in 2020 and the envisaged launch is 2025. For more detailed information on the COMPASSO mission, please refer to [11].…”

Section: Navigation: Compassomentioning

confidence: 99%

“…Besides supplying the markets with communication terminals, TESAT delivers an LCT for the COMPASSO mission [3], demonstrating a high precision ranging system, using our Nd:YAG 1064 nm laser terminal. This demonstration mission will demonstrate ranging capabilities in the sub mm regime, which could support the position, navigation and timing (PNT) market.…”

Section: Introductionmentioning

confidence: 99%

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Status on laser communication activities at Tesat-Spacecom

Heine

Brzoska

Gregory

et al. 2023

Free-Space Laser Communications XXXV

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This paper details the progress in the laser communication activities of Tesat-Spacecom. The EDRS program, the European Data Relay System, a private public partnership program between the European Space Agency ESA and Airbus Defence and Space ADS, is running flawlessly, until now (Oct 2022) 75.000 data relay links have been executed. We report on the performance of the systems in space and detail on other laser comms related activities of TESAT. Especially the delivery and launch of the first optimized LCTs (Laser Communication Terminals) for LEO data relay, the Smart LCTs. In addition, the delivery of Cubesat LCTs have to be mentioned, and the development, qualification and delivery of the ConLCTs for the SDA Tranche 0 program. Furthermore, TESATs involvement in Quantum Key Distribution (QKD) and Precision Navigation and Timing (PNT) programs will be detailed.

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Section: Navigation: Compassomentioning

confidence: 99%

“…The project started in 2020 and the envisaged launch is 2025. For more detailed information on the COMPASSO mission, please refer to [11].…”

Section: Navigation: Compassomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Status on laser communication activities at Tesat-Spacecom

Heine

Brzoska

Gregory

et al. 2023

Free-Space Laser Communications XXXV

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“…Developments are focusing on prototyping and architecture validation [26] as well development of electronics, FW and SW for missions, e.g. COMPASSO [27].…”

Section: Optical Technologies For Satellite Linksmentioning

confidence: 99%

Optical satellite links at DLR

Fuchs

Moll

Poliak

et al. 2023

Free-Space Laser Communications XXXV

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Free-Space Optical Communications have gained increasing attention throughout the last years. It is intended to use optical links in a large number of application scenarios, such as communications or navigation. The Optical Satellite Links department at the German Aerospace Center's Institute of Communications and Navigation looks back to a heritage in free-space optical communication systems research of more than two decades. The researched topics include applications such as optical communications from the satellites to Earth and between satellites, development of optical ground stations, design of optimized adaptive optics systems, quantum key distribution systems, technologies for optical time-transfer and ranging, among others. This paper will give an overview of recent research activities carried out in the Optical Satellite Links department, and will give an outlook to future developments which are planned.

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“…Satellite missions to test clocks with a significantly increased precision are already in preparation. These high-stability clock concepts are, e.g., clocks based on iodine cells and using optical frequency standards with a targeted frequency stability in the low 10 −15 region for sample intervals between 100 s and 10,000 s [7][8][9]. The Deep Space Atomic Clock (DSAC; [10]), a trapped-ion atomic clock developed by the National Aeronautics and Space Administration (NASA), already demonstrated stability of 2 × 10 −15 at 1 day and 3 × 10 −15 at 23 days [10,11].…”

Section: Introductionmentioning

confidence: 99%

Toward a Geodesy and Time Reference in Space (GETRIS): A Study of Apparent Satellite Clocks of a Future GNSS Satellite Constellation

2023

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Today, concepts within the Global Geodetic Observing System (GGOS) aim a Terrestrial Reference System (TRS) with 1 mm accuracy and long-term stability of 0.1 mm/year. GETRIS (Geodesy and Time Reference In Space) is a concept that aims to realize a relativistic reference system based on satellites as an extension to the TRS. This helps with another goal of the GGOS, namely, the connection of different satellite layers with the TRS. For a valuable contribution to the GGOS’s goals, we would expect to achieve precise determined satellite orbits at the level of 1–3 mm and satellite clocks with a picosecond accuracy. The use of increasingly precise links helps to improve the satellite precise orbit determination (POD) and is necessary to synchronize the clocks in the satellite/station network. We analyze a complementary use of high-precision optical dual one-way links at the level of 1 mm precision together with the L-band. In previous studies, we analyzed the benefit for satellite POD, achieving Medium Earth Orbit (MEO) as well as geosynchronous orbit (GSO) accuracies at the low-millimeter level. In this work, we analyze the capabilities for clock synchronization. We compare two different clock types for estimation and prediction. We analyze different satellite constellations and different combinations of measurement links.

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COMPASSO: In-orbit Verification of Optical Key Technologies for Future GNSS

Cited by 4 publications

References 0 publications

Status on laser communication activities at Tesat-Spacecom

Status on laser communication activities at Tesat-Spacecom

Optical satellite links at DLR

Toward a Geodesy and Time Reference in Space (GETRIS): A Study of Apparent Satellite Clocks of a Future GNSS Satellite Constellation

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