单频GPS周跳检测与估计算法

AN ALGORITHM OF DETECTING AND ESTIMATING CYCLE SLIPS IN SINGLE-FREQUENCY GPS

提出一种单频GPS载波相位中的野值、周跳检测与模糊度估计算法 ,采用三阶多项式模型的卡尔曼滤波检测野值与周跳 ,而用一种最佳小波估计模糊度 .该算法适用于采样间隔为 1秒的载波相位测量 ,用 1 995 .6 .2 2Topex星载GPS数据计算的结果表明 ,它有很高的效率 。

The algorithm of detecting outliers and cycle slips in single frequency GPS using Kalman filter in the model of the 3rd order polynomial, and estimating ambiguity using optimal Wavelet is presented in this paper. It is applicable to the carrier phase measurement with one sample every second. The calculated results using data of GPS on Topex satellite on 1995.6.22 show that the algorithm is so efficiency, that it can accurately estimate the ambiguity even carrier phase signals break off a few seconds.