GPS动态精密单点定位与差分定位结果比较

Comparison Between GPS Precise Point Positioning and Dynamic Differential Positioning

首先简要介绍了精密单点定位和差分定位原理,然后重点结合精度鉴定任务中的航空动态GPS数据,用Way Point8.5软件分别进行不同星历和钟差产品下的精密单点定位解算和差分定位解算,并比较它们之间的差别。比较结果表明,精密单点定位与差分定位解算结果差别在80 cm以内,可以利用IGU星历产品进行精密单点定位解算,以对测控设备状态进行预估。

This paper firstly introduces the theory of precise point positioning（PPP）and differential positioning briefly,then focuses on calculating the results of PPP and differential positioning with different ephemeris and clock correction by using Way Point 8.5 software,combining air dynamic GPS data of assignment of precision appraisal,and comparing the difference between the above results. The results show that the difference of the computed results between PPP and differential positioning is less than 80cm. And we can not only compute the result of PPP using IGU ephemeris products,but also forecast the status of equipments for measurement and control.