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Architecture for sensing of small clock shifts in Karoo telescope time on the MeerKAT GHz radio telescope
Author(s): Johan Burger; Renier Siebrits; Vereese van Tonder; Grant Adams; Marc Welz; Zwivhuya Ramudzuli; Francois Kapp
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Paper Abstract

A tracking sensor system for precise telescope time realization called the Karoo Telescope Time (KTT), for next generation precision radio astronomy is described in this article. This is a key enabler for precision timing science like transients, pulsar search and pulsar timing. A Mark I real time sensor called KTT-GNSS was already implemented and verified and needs to ensure receptor timing below the <30ns level. Some aspects and design and algorithm testing for a Mark II post facto sensor called KTT-UTC which has the goal of <5ns is described herein. The Mark II sensor also has accurate daily intermediary sensors, based on past data, and is not based on any extrapolations like the Mark I sensor is.

Paper Details

Date Published: 25 January 2019
PDF: 24 pages
Proc. SPIE 11043, Fifth Conference on Sensors, MEMS, and Electro-Optic Systems, 110431B (25 January 2019); doi: 10.1117/12.2502566
Show Author Affiliations
Johan Burger, South African Radio Astronomy Observatory (South Africa)
Renier Siebrits, South African Radio Astronomy Observatory (South Africa)
Vereese van Tonder, South African Radio Astronomy Observatory (South Africa)
Grant Adams, South African Radio Astronomy Observatory (South Africa)
Marc Welz, South African Radio Astronomy Observatory (South Africa)
Zwivhuya Ramudzuli, South African Radio Astronomy Observatory (South Africa)
Francois Kapp, South African Radio Astronomy Observatory (South Africa)


Published in SPIE Proceedings Vol. 11043:
Fifth Conference on Sensors, MEMS, and Electro-Optic Systems
Monuko du Plessis, Editor(s)

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