逐次滤波方法在GPS单点定位中的应用研究
Application of Sequential Fimtering in GPS Point Positioning
-
摘要: 采用平差计算中得到的观测值的残差来估计指数函数经验模型中的参数,从而使随机模型更真实地反映观测值中的随机误差和偏差。由实际GPS观测数据及广播星历,按以上的函数模型和随机模型采用逐次滤波方法进行解算。结果表明,此方法在未剔除和修复周跳的情况下,可以使单点静态定位的平面外符合精度达1.46 m,高程方向的外符合精度为1.72 m。Abstract: The coefficients in the empirical exponential function are estimated by using the residual of measurements,hence the stochastic model more realistically describes the noise and bias in measurements.By using of GPS data and broadcast ephemeris,the numerical results indicate the RMS with 0.81 m,1.21 m and 1.72 m in east,north,and up are obtained.
下载:
