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GNSS/GPS/GLONASS/BeiDou Band Pass Filter 1100~1700MHz - LOTUS COMMUNICATION SYSTEMS, INC.
Amazon.com: GPS, GLONASS, Galileo, and BeiDou for Mobile Devices: From Instant to Precise Positioning: 9781107035843: Petrovski, Ivan G.: Books
Global Ionospheric Modelling using Multi-GNSS: BeiDou, Galileo, GLONASS and GPS | Scientific Reports