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Title: Improvements of Indian standard time at NPL, New Delhi, maintained through GPS network
Authors: Banerjee, P
Chatterjee, Arundhati
Verma, Manish
Suri, A K
Keywords: Indian standard time;UTC;GPS network;Atomic clock
Issue Date: Feb-2007
Publisher: CSIR
IPC Code: G01S13/04; G01S13/06
Abstract: The National Physical Laboratory (NPL), New Delhi, has been maintaining Universal Coordinated Time (UTC) through GPS network to keep it linked to UTC coordinated by International Bureau of Weights and Measure (BIPM) for more than ten years. Recent measures of housing of cesium clock in a controlled environment, the procurement of new receivers with prior calibration, maintaining the temperature of antenna at a fixed point and the adjustments of required phase and frequency from time to time, have been taken to improve the quality of UTC (NPLI). In view of this, the status of UTC (NPLI) has been studied analytically and exhaustively. The substantial improvement in the performance of the time scale UTC (NPLI) has been observed. This paper elaborates these observations.
Page(s): 20-26
ISSN: 0367-8393
Appears in Collections:IJRSP Vol.36(1) [February 2007]

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