基于不同伪距初值下的RTK定位误差精度分析

Accuracy Analysis of Positioning Error Based on Different Initial Value of Pseudo-range

为了验证不同伪距初值情况下对RTK定位精度的影响,本文基于长期连续的地面卫导接收机实测数据,采用原始伪距、载波相位平滑伪距以及频繁重置(固定时长100s)载波平滑伪距三种伪距初值分别运用RTK浮点解以及RTK固定解进行定位,并将以上各种情况下的定位精度进行统计分析,并得出相应结论,即伪距初值采用载波相位平滑伪距进行RTK定位解算,相比较其他两种伪距初值选取能够达到较高的定位精度和成功率。

In order to verify the influence for the positioning accuracy based on different initial value of pseudo-range, this paper based on long-term continuous measured data of the ground satellite navigation receiver, used RTK float-solution and RTK fixed-solution positioning algorithm, with initial values of primitive pseudo-range, carrier-phase smoothing pseudo-range and frequently resetting(fixed duration time of 100 s) carrier-phase smoothing pseudo-range respectively. Statistic and analyze the positioning accuracy in all of the above case, then draw the corresponding conclusion, that is to say, RTK positioning solution by using carrier phase smoothing pseudo-range can achieve higher positioning accuracy and success rate compared with other two pseudo-range initial value selections.