PCM遥测帧同步技术性能分析  

Synchronization Performance Analysis of PCM Telemetry Frame

作　　者：夏利利[1] 刘冰[1] 周江[1] 刘四方[1] 

机构地区：[1]中国卫星海上测控部,江苏江阴214431

出　　处：《电讯技术》2014年第6期803-807,共5页Telecommunication Engineering

摘　　要：在分析假同步和漏同步现象的基础上,介绍了脉冲编码调制(PCM)遥测帧同步工作的三态逻辑转换过程,通过进一步简化搜索态重叠区假同步概率计算公式,重新对搜索态和校核态的帧同步工作性能指标进行理论建模和仿真,根据仿真结果对影响帧同步性能的相关因素和参数进行讨论,为帧同步参数设计提供参考。Based on the analysis of false alarms and misdetection in frame synchronization of Pulse Code Modulation（ PCM） telemetry, three distinct operating modes of frame synchronizer are presented. By sim-plifying computational formula for false alarms in overlapping region of search mode further, the error per-formance index computational formulas of searching mode and verifying mode are theoretically analyzed and simulated. According to the results, the related influencing factors and parameters are discussed, thereby providing reference for frame synchronization parameters setting.

关 键 词：PCM遥测帧 帧同步 同步概率 容错位数 

分 类 号：TN919[电子电信—通信与信息系统]