一种新的单基准站钟差估计方法

A New Method for Estimation of Clock Error of Single Reference Station

基准站钟差是卫星定位系统定位误差的重要来源。为了准确校正基准站钟差以提高定位精度,提出一种基于三参数时钟模型、Singer运动目标模型和Kalman模型的基准站钟差估计算法。实验采用NOVATEL高精度接收机接收卫星的GPS实时数据以提高实验的可靠性。基于Matlab平台对钟差参数、定位坐标和定位误差进行仿真计算,结果证明其能有效提高GPS定位精度。

The clock error of the reference station is one error source of the satellite positioning system. In order to correct the error and improve the accuracy of positioning,this paper proposes a new clock error estimation method based on three-parameter clock model,the Singer model of moving-target and Kalman fiher algorithm. The simulation uses GPS data from NOVATEL receiver for reliability, and based on Matlab calculates the clock error parameter, position coordinates and positioning errors. The results demonstrate that the method effectively improves the accuracy of satellite positioning system.