Novel unambiguous acquisition algorithm of BOC(n,n) signal
一种新的BOC(n,n)型信号的精确捕获算法

For the problem of ambiguous acquisition of BOC signal caused by its auto-correlation had three peaks for BOC(n, n), this paper presented a new accurate method which was based on correlation function. Firstly, it made the receiving signal Doppler compensation in frequency domain, and implemented the new algorithm by adding a local quadratic BOC(n, n) signal and using the result of BOC(n, n) signal auto-correlation and BOC(n, n) and QBOC(n, n) cross-correlation, after shifting±TC/4, modulus, summation, square. Theory and simulation results show that, the method does not only change the autocorrelation peak width, completely eliminate the related side peaks at the same time, and significantly improve the peak, increases the probability of detection about 4. 5 dB than traditional acquisition algorithm, but also the precision of capture are very good and easy to implement.