Abstract
The Generalized Binary Offset Carrier (GBOC) modulations can offer additional degrees of freedom for shaping the spectrum of navigation signal and provide superior performance in code tracking, multipath and compatibility than traditional Binary Phase Shift Keying (BPSK) and Binary Offset Carrier (BOC) modulations. This paper proposes a generalized modulation scheme for GBOC modulation design. Firstly, the generalized waveform of GBOC modulations is proposed. Then, the proposed construction method of GBOC modulations is presented, and the consistency with traditional GBOC modulations is investigated. Finally, the generalized autocorrelation functions of GBOC modulations are derived based on the inverse Fourier transform method. The results show the new modulation scheme has good consistency with traditional method and can provide the opportunity for flexible satellite payload design.
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