ExoClock Project. III. 450 New Exoplanet Ephemerides from Ground and Space Observations [PDF]
The Astrophysical Journal Supplement Series, 2023 The ExoClock project has been created to increase the efficiency of the Ariel mission. It will achieve this by continuously monitoring and updating the ephemerides of Ariel candidates, in order to produce a consistent catalog of reliable and precise ...
A. Kokori +216 more
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Precise disciplining of a chip-scale atomic clock using PPP with broadcast ephemerides [PDF]
GPS Solutions, 2023 AbstractOver the last decade, chip-scale atomic clocks (CSACs) have emerged as stable time and frequency references with small size, weight, and power (SWaP). While the short-term stability of these devices clearly outperforms other oscillators with similar power consumption, their stability over longer time intervals is notably limited by frequency ...
Kunzi, Florian, Montenbruck, Oliver
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Accurate and Rapid Broadcast Ephemerides for Beidou-Maneuvered Satellites [PDF]
Remote Sensing, 2019 The geostationary earth orbit (GEO) and inclined geosynchronous orbit (IGSO) satellites of the Beidou navigation satellite system are maneuvered frequently. The broadcast ephemeris can be interrupted for several hours after the maneuver.
Jing Qiao +3 more
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Real-time precise measurements of ocean surface waves using GNSS variometric approach
International Journal of Applied Earth Observations and Geoinformation, 2022 The global navigation satellite system (GNSS) wave buoys currently in use can measure ocean surface waves but have major drawbacks regarding their real-time high-precision application due to the communication burden and high differential correction ...
Yang Liu +7 more
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A Concise Method for Calibrating the Offset of GPS Precise Satellite Orbit
Remote Sensing, 2022 A set of Global Navigation Satellite Systems (GNSS) satellite orbit and clock offset are an essential prerequisite for precise application. However, abrupt changes in accuracy at the boundaries are prevalent in products provided by international GNSS ...
Hu Yang +4 more
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ACCURACY TESTING OF THE ONLINE FREE GNSS PPP SERVICES, AS A FUNCION OF OBSERVATION DURATION AND THE ELAPSED TIME FROM MEASUREMENT EPOCH TO EPOCH OF MEASUREMENT COMPUTATION [PDF]
Geodetski Glasnik, 2011 Use of PPP has become possible since the advent of precise satellite ephemerides and clock corrections from IGS. This work represents a research in attainable accuracy and reliability of the free online GNSS services (APPS, CSRS, GAPS, magicGNSS ...
Denis Tabučić +2 more
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Orbital Period Refinement of CoRoT Planets with TESS Observations
Frontiers in Astronomy and Space Sciences, 2021 CoRoT was the first space mission dedicated to exoplanet detection. Operational between 2007 and 2012, this mission discovered 37 transiting planets, including CoRoT-7b, the first terrestrial exoplanet with a measured size. The precision of the published
Peter Klagyivik +8 more
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Mobile laser scanning elevation data accuracy in closed and partially open sky area
Geodesy and Cartography, 2021 Mobile laser scanning is being used more often in Estonia and abroad to obtain geospatial information. As the system is still new and being upgraded, different methods are being used to find out how accurately the mobile laser scanner can measure in ...
Gerly Annok, Valdar Tammin, Natalja Liba
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Remote Sensing, 2021 Positioning accuracy is affected by the combined effect of user range errors and the geometric distribution of satellites. Dilution of precision (DOP) is defined as the geometric strength of visible satellites.
Haomeng Cui, Shoujian Zhang
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Validation of GTDS and DSST Standalone versions against precise orbit ephemerides
, 2022 Cefola, Paul J. +3 more
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