Dissemination of UTC(NICT) by Means of QZSS

Author

Hobiger, T. ; Takahashi, Y. ; Nakamura, Mitsutoshi ; Gotoh, Toshiyuki ; Hama, S. ; Maruyama, Tetsuhiro ; Nagatsuma, Tadao ; Noda, H. ; Kishimoto, Mikio ; Nakayama, Keisuke ; Ohki, Y.

Author_Institution

Nat. Inst. of Inf. & Commun. Technol., Koganei, Japan

Volume

62

Issue

6

fYear

2013

fDate

Jun-13

Firstpage

1537

Lastpage

1544

Abstract

The Japanese Quasi-Zenith Satellite System (QZSS) offers the possibility to transmit information with an unprecedented bit rate of 2000 bps via the L-band experimental signal. This feature can be used to disseminate Japan Standard Time, i.e., Universal Time Coordinated (UTC)(NICT), to any user capable of receiving the new QZSS signal. Various timing transmission modes as well as a dedicated ionosphere correction model allow users to instantaneously realize UTC(NICT) across Japan with an uncertainty of a few nanoseconds. However, a sophisticated real-time ionosphere correction model also needs to be transmitted to the user to compensate for dispersive ionosphere delays which are the largest contributor to the total error budget of the system.

Keywords

Global Positioning System; ionospheric techniques; time measurement; timing; Japan Standard Time; L-band experimental signal; NICT; QZSS; UTC; Universal Time Coordinated; bit rate 2000 bit/s; dispersive ionosphere delays; ionosphere correction model; quasi-zenith satellite system; time dissemination; timing transmission mode; Clocks; Delay; Global Positioning System; Receivers; Satellite broadcasting; Satellites; Synchronization; Ionosphere; receivers; satellite navigation systems; time dissemination; time measurement;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2012.2225920

Filename

6353924