A Novel Unambiguous Acquisition Algorithm Based on Segmentation Reconstruction for BOC(n,n) Signal

In order to improve the frequency band utilization and avoid mutual interference between signals, BD3 satellite signals adopt Binary Offset Carrier (BOC) modulation. On one hand, BOC modulation has a narrow main peak width strong anti-interference ability; on other phenomenon of false acquisition locking caused by multi-peak characteristic itself needs be resolved. this context, paper proposes new BOC(n,n) unambiguous algorithm based segmentation reconstruction. The is splitting local signal into four parts in each subcarrier period. branch received are correlated with generate correlation signals. After series combined reconstructions, final detection function completely eliminates secondary peaks. A simulation shows that can eliminate sub-peak for modulated subcarriers different phase. characteristics retained. Experiments show proposed superior performance probability peak-to-average ratio.