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Which country just completed the BeiDou constellation, one of four global navigation networks alongside GPS, GLONASS and Galileo?
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Gps glonass galileo and beidou mobile devices instant precise positioning | Wireless communications | Cambridge University Press
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China Beitian Full Frequency Gnss Antenna GPS Galileo Glonass Beidou Irnss Bt WiFi 4G Combned Rtk High Gain Survey Geodetic Bt-4n03A - China Gnss Antenna, High-Precision Survey GPS Antenna
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Precise point positioning with quad-constellations: GPS, BeiDou, GLONASS and Galileo - ScienceDirect
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Precise positioning with current multi-constellation Global Navigation Satellite Systems: GPS, GLONASS, Galileo and BeiDou | Scientific Reports
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Global Ionospheric Modelling using Multi-GNSS: BeiDou, Galileo, GLONASS and GPS | Scientific Reports
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GPS, GLONASS, Galileo, and BeiDou for Mobile Devices: From Instant to Precise Positioning: Petrovski, Ivan G.: 9781107035843: Books: Amazon.com
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