IN INDIA USING SYMPHONIE CLOCK SYNCHRONISATION EXPERIMENT SATELLITE

Y.V. Somayajulu, B.S. Mathur, P. Banerjee, S.C. Garg, Lakha Singh, P.C. Sood, Tuhi Ram Tyagi

Abstract:	A recent clock synchronisation experiment between the National Physical Laboratory (NPL), New Delhi und Space Applications Centre (SAC). Ahemedabad, in India via geostationary satellite symphonic-II, stationed at 49° E longitude, is reported in this paper. As only one satellite transponder was available for this experiment, the two way transmission of the clock pulses was carried out by switching the transmitreceiver roles at the two stations at 5 minute intervals to achieve a nearly simultaneous two way transmission. Taking into account all the additional delays, the results demonstrated a clock-synchronisation accuracy of better than 0.5 microseconds. A crystal based portable clock flown aboard an aircraft confirmed this clock-synchronisation within a microsecond.
Published in:	Proceedings of the 10th Annual Precise Time and Time Interval Systems and Applications Meeting November 28 - 30, 1978 Goddard Space Flight Center Greenbelt, Maryland
Pages:	643 - 658
Cite this article:	Somayajulu, Y.V., Mathur, B.S., Banerjee, P., Garg, S.C., Singh, Lakha, Sood, P.C., Tyagi, Tuhi Ram, "IN INDIA USING SYMPHONIE CLOCK SYNCHRONISATION EXPERIMENT SATELLITE," Proceedings of the 10th Annual Precise Time and Time Interval Systems and Applications Meeting, Greenbelt, Maryland, November 1978, pp. 643-658.
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