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Method And Device For Demodulating Galileo Alternate Binary Offset Carrier (Alt-BOC) Signals
Method And Device For Demodulating Galileo Alternate Binary Offset Carrier (Alt-BOC) Signals
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机译:解调伽利略交替二进制偏移载波(Alt-BOC)信号的方法和装置
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摘要
A method for demodulating alternate binary offset carrier signals includes at least two subcarriers, each having an in-phase and a quadrature component modulated by pseudo-random codes. The quadrature components are modulated by dataless pilot signals. The in-phase components are modulated by data signals. The method includes converting the alternate binary offset carrier signals into an intermediate frequency, band-pass filtering the converted signals and sampling the filtered signals, generating a carrier phase and carrier phase-rotating the sampled signals by the carrier phase, correlating the rotated sampled signals, and generating, for each subcarrier, pseudo-random binary codes and a subcarrier phase, which are used to correlate the rotated sampled signals.
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