数传接收机防错锁机制改进方法  

An Anti-false-lock Optimization Method on Digital Receiver

作　　者：张健[1] 季燕青[1] 徐兴源[1] 

机构地区：[1]中国卫星海上测控部,江阴214431

出　　处：《遥测遥控》2014年第3期58-61,68,共5页Journal of Telemetry,Tracking and Command

摘　　要：针对统一测控系统数传接收机存在载波捕获错锁的问题,分析产生错锁的原因,并在此基础上提出一种改进的载波捕获处理方法。针对固有频点错锁和随机频点错锁两种情况对接收机增加了限制条件,有效地降低了载波捕获时发生错锁的概率,增强了系统工作的可靠性。文中还通过实际工程系统测试验证了该防错锁改进方法的可行性。The false-lock of receiver occurs sometimes in the process of digital receiver although some avoidance measures are taken.Based on the research of false-lock,an optimization method of carrier acquisition processing is raised.By adding the restrictive condition on the inherent frequency and the random frequency false-lock conditions,the probability of false-lock in carrier acquisition is reduced obviously,and the equipment reliability is improved.The feasibility of the optimization method is verified by applications in practical engineering systems.

关 键 词：数传接收机 载波捕获 防错锁 改进方法 

分 类 号：TN911[电子电信—通信与信息系统]