Precise Time Transfer GPS Receiver

Hiroaki Toyoizumi, Masahiro Genda, Masarou Saito, Yoshiji Hieda, Yukio Takahashi and Haruo Saito

Abstract:	Recently, time authentication by time-stamp is of great importance for security and long-term storage of digital documents. Time authentication service as well as correct time dissemination relies on highly traceable provision of time information. Particularly, in Japan, law and infrastructure is being prepared rapidly for providing the time information. Time authentication and time dissemination by private services is defined as time business, which adopts GPS common-view method that is a time transfer method by GPS satellites. The nationwide time transfer in Japan, which differs from the international time transfer between continents, has some merits. For examples, we can continuously observe many common-view satellites for many hours between the both stations. We developed the time transfer GPS receiver which suited to the nationwide GPS common-view for time business. Because of multi-channel receiving, our GPS receiver can observe more accurate time than the limited one satellite receiving for common-view. In addition, because of flexible schedule setting, it can continuously observe the time. We measured the time difference between the atomic clock and GPS time, and the national standard time. We have confirmed that our GPS receiver is effectively available for the time transfer. We believe that this receiver will play an important role in systems for providing time information with the high traceability.
Published in:	Proceedings of the 18th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2005) September 13 - 16, 2005 Long Beach Convention Center Long Beach, CA
Pages:	1732 - 1738
Cite this article:	Toyoizumi, Hiroaki, Genda, Masahiro, Saito, Masarou, Hieda, Yoshiji, Takahashi, Yukio, Saito, Haruo, "Precise Time Transfer GPS Receiver," Proceedings of the 18th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2005), Long Beach, CA, September 2005, pp. 1732-1738.
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