说明：  完整的锁相环matlab代码实现，其中包括高斯噪声干扰，频差，相差，给出最后频率及相位收敛结果图。重要的是代码中有本人详细注释，易于理解
(Complete phase-locked loop matlab code, including the Gaussian noise interference, frequency difference, a difference, given the final results of the frequency and phase diagram convergence. Important that the code in detail in my notes, easy to understand)