帧同步码最佳码长的确定是航空移动通信中提高通信效率的重要问题。文中针对航空移动通信中某类帧同步码码长对帧长以及重复开销的影响,提出一种尾序列有限状态的分析方法,通过分析总平均开销与帧同步码码长、帧总长度的关系,获得不同帧长下的帧同步码最佳码长。并对不同帧长下帧同步码最佳码长进行仿真分析,仿真结果表明该方法行之有效。 The determination of the optimal code length of the frame synchronization code is an important issue for improving the communication efficiency in the air mobile communication. Aiming at the influence of frame length of a certain kind of frame synchronization code length on the frame length and repetition cost in aeronautical mobile communication, a finite state analysis method of tail sequence is proposed. By analyzing the relationship between the total average overhead and the length of frame synchronization code and the total frame length , Get the frame length under different frame length code optimal code length. The optimal code length of frame synchronization code under different frame length is simulated and analyzed. The simulation results show that this method is effective.