摘要
单站GPS定位由于数据受体系结构及观测条件的影响,测量结果精度低且不稳定。用多个手持GPS设备构成组合GPS静态定位系统,通过固联结构对随机误差进行校正,并充分利用测量数据的方差信息构成权矩阵,得到加权最小二乘解。仿真实验表明新方法可将定位精度快速稳定地提高到3m左右。
As the single-station GPS positioning data is related to the system structure and observation conditions, location precision is not good and the results are varied. This study proposed an combined GPS passive location system which was made of three PDA GPS equipments. The stationary structure could correct random error. This method also used data variance to build weighted matrix and obtained weighted least squares estimate. Simulation studies show that the new method can get better location precision and better stability.
出处
《信息与电子工程》
2009年第4期253-256,277,共5页
information and electronic engineering
关键词
固联系统
统计信息
几何信息
加权最小二乘估计
stationary system
statistical information
geometry information
weighted least squares estimate
