QZSS | Article about QZSS by The Free Dictionary
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QZSS(Quasi-Zenith Satellite System) Space-based navigation augmentation for the U.S. GPS system in the Asia-Oceania region and Japan. With a total of four satellites built by Mitsubishi Electric, the first was launched in 2010, and all four became operational in 2018. Additional satellites are planned. See GPS augmentation system.