Recent Development of QZSS L1-SAIF Master Station

Takeyasu Sakai, Sonosuke Fukushima, and Ken Ito

Abstract:	QZSS (quasi-zenith satellite system) is a Japanese satellite navigation program with a regional service coverage. The orbits for QZS (quasi-zenith satellite) are 24-hour elliptic orbit inclined 45 degrees in order to broadcast radiosignals from high elevation angle into urban canyons. QZSS will offer both supplement and augmentation signals in order to offer the maximum benefit to users. QZSS will broadcast GPS augmentation information on the GPS L1 frequency. For this purpose L1-SAIF (submeter-class augmentation with integrity function) signal has been developed based on SBAS standard because both of them offer similar function to the almost same service area. The target of user position accuracy with augmentation was set to 1 meter RMS. L1-SAIF signal will also provide the integrity function necessary for safety of mobile users. L1-SAIF augmentation messages are generated at L1- SAIF Master Station (L1SMS) and broadcast to the experimental area via QZSS MCS and QZS. The ENRI, Electronic Navigation Research Institute, has been developing L1SMS as a part of the national QZSS program led by the JAXA, Japan Aerospace Exploration Agency. These days all facilities including L1SMS and QZSS MCS are installed properly and integration test activities are in progress.
Published in:	Proceedings of the 2010 International Technical Meeting of The Institute of Navigation January 25 - 27, 2010 Catamaran Resort Hotel San Diego, CA
Pages:	354 - 364
Cite this article:	Sakai, Takeyasu, Fukushima, Sonosuke, Ito, Ken, "Recent Development of QZSS L1-SAIF Master Station," Proceedings of the 2010 International Technical Meeting of The Institute of Navigation, San Diego, CA, January 2010, pp. 354-364.
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