In order to solve the problem of detecting a BOC signal, which uses a long-period pseudo random sequence, an algorithm is\npresented based on quadrature channel correlation. The quadrature channel correlation method eliminates the autocorrelation\ncomponent of the carrier wave, allowing for the extraction of the absolute autocorrelation peaks of the BOC sequence. If the same\nlag difference and height difference exist for the adjacent peaks, the BOC signal can be detected effectively using a statistical analysis\nof themultiple autocorrelation peaks.Thesimulation results show that the interference of the carrier wave component is eliminated\nand the autocorrelation peaks of the BOC sequence are obtained effectively without demodulation.The BOC signal can be detected\neffectively when the SNR is greater than âË?â??12 dB.The detection ability can be improved further by increasing the number of sampling\npoints. The higher the ratio of the square wave subcarrier speed to the pseudo random sequence speed is, the greater the detection\nability is with a lower SNR.The algorithm presented in this paper is superior to the algorithm based on the spectral correlation.
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