一种高精度的北斗伪距单点定位加权算法  

A high-precision weighted least squares algorithm for BDS pseudo-range single point positioning

作　　者：李春华[1] 蔡成林[1] 梁愈高 徐李冰 

机构地区：[1]桂林电子科技大学信息与通信学院,桂林541004 [2]桂林电子科技大学计算机科学与工程学院,桂林541004

出　　处：《测绘科学》2015年第9期33-38,共6页Science of Surveying and Mapping

基　　金：国家自然科学基金重点项目(11033004);国家自然科学基金项目(60263028);广西自然科学基金重点项目(2012GXNSFDA053027);中国科学院时间频率基准重点实验室开放基金项目(Y000YR1S01)

摘　　要：为提高北斗伪距单点定位的精度与速度,文章提出了一种基于互差中值理论的加权最小二乘算法。通过北斗实测数据验证:该算法的定位精度较最小二乘算法和直接解算方法的定位精度有较大提高,并能有效地减少问题卫星的影响。该算法对于当前导航定位接收机的改进具有较大的参考价值。In order to improve the precision and speed of BDS pseudo-range single point positioning, the paper proposed a Weighted Least Squares algorithm based on Mutual Difference median theory. It was proved by the measured BDS data that the positioning precision of the proposed algorithm would be much higher than that of least squares positioning algorithm and that of direct calculation positioning algorithm, and the algorithm could efficiently reduce the influence of satellites whose integrity are poor. This algorithm would provide a reference for improving the current navigation and positioning receivers,

关 键 词：北斗 伪距单点定位 互差中值 加权最小二乘 直接解算 

分 类 号：P228[天文地球—大地测量学与测量工程]