The GALILEO GPS system consists of 10 signals in four frequency bands.

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　　1) E5 frequency band: the frequency range is 1164-1215 MHz, including E5a and E5b, each frequency band contains two signals, the modulation mode is AltBOC(15, 10), the code rate is 10.23 MHz, and the minimum signal received power is -155dBW. This frequency band mainly provides Open Service (OS) and Safety-of-Life (SOL) services.

　　2) E6 band: frequency range 1215~1300 MHz, including 3 signals, the modulation mode is BPSK, the code rate is 5.115 MHz, the minimum signal received power is -155 dBW. The frequency band mainly provides Public Regulated Service (PRS) and Commercial Encrypted Service (CS).

　　3) E2-L1-E1: Frequency range 1559~1591 MHz, including 3 signals, center frequency 1575.42 MHz for compatible with GPS. The E1 frequency band coverage range is 1587~1591 MHz, the modulation mode is BOC(1,1), the code rate is 1.023 MHz, the minimum signal received power is -157 dBW, mainly provides public services and life safety services. The E2 band covers 1559~1563 MHz and mainly provides public licensed services.

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