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Japanese PNT Satellites (QZSS)

Year: 2016
Country: Japan
In 2010, the Japan Aerospace Exploration Agency (JAXA) launched a single positioning, navigation, and timing (PNT) satellite as a start for its Quasi-Zenith Satellite System (QZSS). Japan has not launched other satellites into the QZSS constellation since. Japan’s 2016 share of the world’s...
Year: 2015
Country: Japan
Launched in 2010 by the Japan Aerospace Exploration Agency (JAXA), the Quasi-Zenith Satellite System (QZSS) continued through 2015 with ## satellite. JAXA intends to launch ## more QZSS satellites into orbit by 2018. Eventually, ## QZSS satellites will orbit the Earth by 2023.
Year: 2014
Country: Japan, United States
The Japan Aerospace Exploration Agency (JAXA) launched the ## satellite of its Quasi-Zenith Satellite System (QZSS) in September 2010, and continued to operate and run tests on it during 2014. Japan’s urban canyons and mountainous regions present challenges for receiving the relatively weak...
Year: 2013
Country: Japan, United States
Japan already employs a ##-satellite GPS-augmentation system called MSAS, which stands for the MTSAT (Multi-functional Transport Satellite) Satellite-based Augmentation System. The Japan Aerospace Exploration Agency (JAXA) is also creating the Quasi-Zenith Satellite System (QZSS), consisting of ##...
Year: 2012
Country: Japan, United States
Japan is creating the Quasi-Zenith Satellite System (QZSS), consisting of ## or ## satellites in a quasi-zenith orbit, and ## satellites in GEO to be operated by JAXA. This network will supplement its signals with those of the GPS network and, by using a tailored GEO orbit, will provide improved...
Year: 2011
Country: Japan, United States
Japan is also creating a national PNT system called the Quasi-Zenith Satellite System (QZSS), consisting of ## GEO satellites. In September 2010, the first of these, the spacecraft Michibiki (Japanese for “guiding” or “showing the way”), was launched. While these satellites are GEO, they...
Year: 2010
Country: Japan, United States
In September 2010, JAXA successfully launched the Michibiki spacecraft, the ## satellite of the Japanese Quasi-Zenith Satellite System (QZSS). This network will be comprised of ## GEO satellites operating over Japan and surrounding areas. The orbit of these satellites was selected so that they will...
Year: 2009
Country: Japan
The complete constellation is planned to be in place by 2011, though no launches had been conducted by the end of 2009. Japan’s Quasi-Zenith Satellite System (QZSS) will consist of ## GEO satellites operating over Japan and surrounding areas. While these satellites are geosynchronous, orbiting...
Year: 2008
Country: Japan, United States
Japan’s Quasi-Zenith Satellite System will supplement GPS coverage over areas of Japan that prove difficult with GPS alone. The first launch is expected in 2010. 
Year: 2007
Country: Japan
The first launch of Japan’s Quasi-Zenith Satellite System (QZSS) is scheduled for 2009. QZSS uses ## geosynchronous satellites in orbital planes designed to have observed elevations of 60 to 70 degrees over Japan. These observed elevations will avoid interference from urban canyons or...

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