一种差分GNSS动态定位精度的检测方法

An appraisal method for dynamic positioning accuracy of differental GNSS

提出了一种基于双基准站的差分GNSS动态定位精度检测方法,在沿用差分GNSS模拟器短基线检测结论的基础上,着眼于GNSS移动站终端设备在运动过程中与2个基准站距离远近的变化而产生的精度差异,提取满足模拟器最大基线范围内的差分数据作为比较标准数据,对大于模拟器最大基线的差分数据做精度检测,然后结合模拟精度和检测残差,利用误差传递规律,得到差分GNSS在超过模拟器模拟基线之外的差分定位精度,经过适当试验设计,可获得任意基线长度条件下的定位精度。

An accuracy appraisal method for differential GNSS dynamic positioning based on dual base stations is proposed in this paper.The method accepts accuracy result evaluated from the differential GNSS simulator,and analyzes the accuracy changing rule of moving GNSS equipment between the two differential base stations.It chooses the standard data within the longest simulation baseline to judge the other data out of the longest simulation baseline which works in the situation of long baseline base stations.Considering the relation between simulating accuracy and error propagation law,the differential GNSS accuracy result under any baseline length can be obtained by appropriate test designs.