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Positioning, Navigation, and Timing (PNT) Satellites

Japanese PNT Satellites (QZSS)


2017 – QZSS – Snapshot

After seven years of single-satellite operations for the Quasi-Zenith Satellite System (QZSS), Japan’s PNT constellation, the Japan Aerospace Exploration Agency (JAXA) launched three more QZSS satellites into orbit during 2017.…

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2016 – QZSS – Snapshot

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…

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2005 – QZSS

Japan is developing the Quasi-Zenith system, a regional augmentation of the GPS signal, with a 2008 planned launch. Japan is developing the Quasi-Zenith system, a regional augmentation of the GPS…

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2007 – QZSS

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…

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2014 – QZSS

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.…

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2008 – QZSS

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.  Japan’s Quasi-Zenith Satellite System will supplement…

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2012 – QZSS

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…

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2013 – QZSS

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…

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