摘要
对载波相位平滑伪距的原理和数据预处理进行了探讨,给出提高其定位精度的处理方法和流程。通过两个算例得到如下结论:对C1和P2码进行相位平滑可有效提高伪距定位精度,较长时间观测定位精度可达1 m左右,利用精密星历改进后,平滑伪距的定位精度可达0.5 m左右;对P1和P2码进行相位平滑对定位精度提高不大,较长时间观测平滑前后的定位精度均可达到0.6 m,利用精密星历改进后,精度可达0.3 m;在动态测量后处理中,绝大部分历元利用精密星历结合相位平滑的定位精度可达2 m。
The principle and data preprocessing of carrier smoothed pseudorange are discussed and the method which can improve the positioning accuracy and its flow are given. With this method two computation examples are made. The results show that ： 1 ） the accuracy can be improved efficiently by using smoothed C1 and P2 pseudorange in static data processing, the accuracy can reach 1 m if the time is long and can attain 0.5 m if the precise ephemeris is taken; 2）the accuracy can be boost hardly by using smoothed P~ and P2 pseudorange, but the accuracy can be improved from 0.6 m to 0.3 m if the time is long enough and the precise ephemeris is used ; 3 ） most epochs can reach to the accuracy of 2 m precision in kinematic positions if the smoothed code and precise ephemeris are utilized.
出处
《大地测量与地球动力学》
CSCD
北大核心
2009年第4期106-110,共5页
Journal of Geodesy and Geodynamics
基金
国防预研项目(513220405)
关键词
相位平滑伪距
单点定位
精密星历
周跳
精度
carrier phase smoothed pseudorange
point positioning
precise ephemeris
cycle slip
accuracy
