Impact of atomic clock and time-transfer noises in the formation of the International Atomic Time

W. Lewandowski

doi:10.1117/12.731504

21 June 2007 Impact of atomic clock and time-transfer noises in the formation of the International Atomic Time

W. Lewandowski

Proceedings Volume 6603, Noise and Fluctuations in Photonics, Quantum Optics, and Communications; 66030X (2007) https://doi.org/10.1117/12.731504
Event: SPIE Fourth International Symposium on Fluctuations and Noise, 2007, Florence, Italy

Abstract

The Bureau International des Poids et Mesures (BIPM), is on charge of computing and publishing international reference time scale. A practical scale of time for world-wide use has two essential elements: a realization of the unit of time and a continuous temporal reference. The reference used is International Atomic Time (TAI), a time scale calculated at the BIPM using data from some three hundred atomic clocks in over fifty national laboratories. TAI is a uniform scale. The Coordinated Universal Time (UTC) is obtained by adding to TAI leap seconds due to slightly irregular rotation of the Earth. The contributing clocks located around the world, mostly in hemisphere north, are compared by different satellite time transfer techniques. Clocks and transfer techniques are affected by various types of noise. This paper briefly reports the impact of these noises on the computation of TAI.

Citation Download Citation

W. Lewandowski "Impact of atomic clock and time-transfer noises in the formation of the International Atomic Time", Proc. SPIE 6603, Noise and Fluctuations in Photonics, Quantum Optics, and Communications, 66030X (21 June 2007); https://doi.org/10.1117/12.731504

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available