Kalman滤波在GPS授时中的应用

Application of Kalman Filter to GPS Timing

高精度的星载原子钟使得GPS授时精度得到了很大提高.针对GPS授时过程中接收机受到各种噪声的影响,利用Kalman滤波原理,建立状态方程和观测方程,对噪声进行分类和讨论,运用Kalman滤波原理对接收机钟差数据进行了分析,计算结果表明Kalman滤波可提高GPS单向授时精度.

GPS timing precision is raised by the use of on-board atomic clock. Facing different noise influences of the receiver a kinematic equation and an observation equation are established based on kalman filter theory. The noises are classified,and the clock error dataset is analyzed. The calculations show that GPS single timing precision is greatly improved by kalman filter theory.