Generating method for correlation function with no side-peak and tracking system for boc signal

PURPOSE: A correlation function generation method and a BOC signal tracking system are provided to perform BOC signal tracking having reliability through a surround peak and to reduce distance measurement error of a satellite navigation system. CONSTITUTION: A receiver(110) receives a BOC signal. A sub-correlation function generator(120) generates a sub-correlation function of the BOC signal in the receiver. A sub-correlation coupling unit(130) couples the sub-correlation function and generates first final correlation function. A determining unit(150) tracks the signal through the first final correlation function.