Clock Synchronisation in the Vicinity of the Earth
Francois Goy
TL;DR
This paper analyzes how electromagnetic signal transmission near Earth affects clock synchronization, highlighting the limitations of synchronizing Geocentric Coordinate Time due to relativistic effects.
Contribution
It introduces a detailed calculation of signal transmission time near Earth, including an orbital Sagnac term, and discusses the implications for synchronizing different coordinate times.
Findings
Transmission time contains an orbital Sagnac term.
Synchronization of TCB is feasible with atomic clocks.
Synchronization of TCG faces fundamental limitations.
Abstract
The transmission time of an electromagnetic signal in the vicinity of the earth is calculated to c-2 and contains an orbital Sagnac term. On earth, the synchronisation of the Barycentric Coordinate Time (TCB) can be realised by atomic clocks, but not the one of Geocentric Coordinate Time (TCG). The principle of equivalence is discussed.
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Taxonomy
TopicsAstro and Planetary Science · Geomagnetism and Paleomagnetism Studies · Geophysics and Gravity Measurements