一种确定单站接收机码间偏差的新算法

A NEW ALGORITHM FOR DETERMINING SINGLE RECEIVER DCB

利用双频载波相位平滑伪距数据以及GIM提供的全球垂直方向电子含量(VTEC)和卫星码间差,通过方差分量估计解算接收机码间差以及VTEC残差值。利用35个IGS站数据计算了接收机的码间差;并与IGS提供的测站码间差相比较,结果表明,能够以优于1ns的精度确定接收机码间差。

Based on the variance components estimation, the receivers DCB and VTEC residual values are cal culated by the pseudorange data with carrier phase smoothing and the vertical electronic content （VTEC） and the DCB of satellites. By using 35 IGS stations data, the DCB of 40 IGS receivers are estimated. The results show that the accuracy of DCB can be better than 1 nanosecond compared with the DCB provided by the IGS.