针对数字卫星广播系统中采样时钟偏差会严重影响接收性能的问题,提出了一种采样频率和相位同步方法。该方法利用迟早门进行采样误差估计,利用Farrow滤波器进行插值处理。通过采样频偏调整环路控制Farrow滤波器,实现采样频率和相位同步。实验结果表明,该方法能够在高强度噪声干扰和较大载波频偏环境下,快速准确的实现采样时钟同步。该方法还可以广泛应用于数字地面广播、数字移动广播等多个领域。 Aiming at the problem that the sampling clock deviation in digital satellite broadcasting system will seriously affect the receiving performance, a sampling frequency and phase synchronization method is proposed. The method uses the early and late gate sampling error estimation, using Farrow filter for interpolation. Control the Farrow filter by the sampling frequency offset adjustment loop to realize the sampling frequency and phase synchronization. The experimental results show that this method can realize the sampling clock synchronization quickly and accurately under the condition of high intensity noise interference and large carrier frequency offset. The method can also be widely used in digital terrestrial broadcasting, digital mobile broadcasting and other fields.