AOS Studies on Use of PPP Technique for Time Transfer

P. Lejba, J. Nawrocki, D. Lemanski, and P. Nogas

Abstract:	This work concerns the clock parameter determination of four timing receivers TTS-4 (SN112 AOS and SN126 AOS) and ASHTECH Z-XII3T (PTB and USNO) by use of the Precise Point Positioning (PPP) technique for three time links: AOS-PTB, AOS-USNO, and PTBUSNO. The receiver clock parameters were calculated for the period from July 1 to July 28, 2011, with 7-day and 14-day solutions, and from July 1 to 31, 2011, with one- month solution. RINEX data files which include phase and code GPS data (PTB and USNO) and GPS/GLONASS data (AOS) were recorded in 30-second intervals. Additionally, the comparison for a very short time link of the main primary receiver TTS-4 (SN 112) and the experimental receiver TTS-4 (SN 126) was performed based on GPS and GLONASS data recorded in the period September 17-26, 2011. Both of the receivers were developed by AOS and PikTime. Currently PPP is one of the main time transfer methods used at AOS. It is an important tool and alternative for other time transfer techniques realized by AOS such as GPS CV, GLONASS CV and TWSTFT.
Published in:	Proceedings of the 43rd Annual Precise Time and Time Interval Systems and Applications Meeting November 14 - 17, 2011 Hyatt Regency Long Beach Long Beach, California
Pages:	407 - 420
Cite this article:	Lejba, P., Nawrocki, J., Lemanski, D., Nogas, P., "AOS Studies on Use of PPP Technique for Time Transfer," Proceedings of the 43rd Annual Precise Time and Time Interval Systems and Applications Meeting, Long Beach, California, November 2011, pp. 407-420.
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