中文摘要：

针对BDS常规实时动态定位（RTK）中,随着流动站与参考站间的距离增加,大气延迟误差的空间相关性大大降低,影响了整周模糊度的快速解算和流动站位置信息的解算精度问题。该文研究了一种基于非差观测误差的BDS中长距离常规RTK定位算法,采用非差误差改正方法为流动站提供误差改正,利用参考站的非差误差改正数以单颗卫星为对象进行误差改正。对电离层延迟误差和相对天顶对流层延迟误差进行参数估计,处理电离层延迟误差和对流层延迟误差的影响。最后通过BDS实测数据对该算法进行了算法验证和结果分析。实验结果表明,该算法可以实现BDS中长距离常规RTK的快速定位,并获得厘米级定位精度。

英文摘要：

Aiming at the problem that the interdependency of atmospheric delay error is decreasing with increasing the baseline length between base station and rover in the traditional BDS RTK,thereby affecting the rapid solution of ambiguity and the precision of rover position.The algorithm of traditional BDS RTK of long and medium baseline using the correction of un-difference error was introduced in this paper.The error of rover was removed by the method of un-difference error correcting,and the correction of un-difference error on base station was used and the single satellite was taken as an object in this method.The parameters ionospheric delay error and relative zenith tropospheric delay were estimated,and the influence of ionospheric delay error and tropospheric delay can be reduced.The test data of BDS were used to test this algorithm and analysis the analyse results.The results indicated that the rapid positioning of traditional BDS RTK of long and medium baseline can be realized and the centimetre level positioning accuracy is achieved by this algorithm.