Design of hardware correlator for BOC(1,1) baseband signal
Dongkai Yang, Weiqiang Li, Xianyang Liu, Yuan Feng · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2009
BOC signal structure was introduced in this paper. BOC signal modulation and BOC(1,1) auto-correlation function were analyzed in detail. Based on the signal acquisition, tracking loop for BOC(1,1), a hardware design with FPGA chip was presented for the correlator, implemented using EP2S60 from Altera Co. The hardware correlator architecture and functions were described with two key modules, i.e. Pseudo-Random Noise (PRN) code generator and Numerical Control Oscillator(NCO). The practical test results show that the designed hardware correlator can work steadily and correctly, which is valid for the BOC(1,1) signal acquisition and tracking.