一种北斗定向系统的周跳检测及修复方法

Cycle slips detection and recovery method based on Bediou orientation system

载波相位测量是北斗卫星定向系统的核心。要实现高精度,必须保证载波相位无周跳现象。针对载波相位变化率的精度易受载体速度变化影响,电离层残差法可修复小范围周跳的情况,提出一种联合载波相位变化率和冗余双差观测量的方法,并对实测数据进行算法验证。结果表明该方法可以有效修复周跳,在载体动态情况下取得良好效果。

Carrier phase measurement is the core of Beidou satellite orientation system.To get high precision,the carrier phase can t have cycle slips.The precision of carrier phase change rate method is easily affected by the change of carrier s rate,and the ionosphere residual method can only repair small range cycle slips.A method of combining carrier phase change rate and redundant double difference algorithm for detection and recovery of cycle slips is proposed.Experimental result shows that this algorithm is efficient,especially in dynamic conditions.