摘要
本文简单介绍了多系统组合PPP定位原理，并利用亚太地区四个监测站的实测数据分析了多系统组合PPP的定位精度和收敛时间。实验结果表明，多系统组合PPP相比于单系统PPP在精度和收敛速度方面都有所提高。北斗单系统收敛时间在80min以上，水平和高程方向RMS都小于6cm；GLONASS收敛时间在50min左右，水平方向RMS小于3cm，高程方向小于4cm；GPS收敛时间在30min左右，水平和高程方向RMS都小于3cm；双系统组合可以将收敛时间降低提高到30min内，水平方向RMS小于2cm，高程方向RMS小于3cm；三系统组合可以将收敛时间降低到20min内，水平方向RMS小于1cm，高程方向RMS小于1．5cm。
The principle of multi-system combined precise point positioning （PPP） is simply introduced and the accuracy and convergence time of combined PPP based on the data from four stations in Asia-Pacific region is analyzed in this paper. The results show that the accuracy and convergence time of PPP of combined system are better than that of a single system. The con- vergence time of BDS is over 80mins and the RMS in horizontal and vertical direction are less than 6cm; the convergence time of GLONASS is about 50mins and the RMS in horizontal and vertical direction is less than 3cm and 4cm respectively; the conver- gence time of GPS is about 30mins, and the RMS in horizontal and vertical direction is less than 3cm respectively ; the combina- tion of two kinds of system will shorten the convergence time within 30mins and make the RMS in horizontal and vertical less than 2cm and 3cm respectively; the combination of three kinds of system will shorten the convergence time of combined three system within 20mins and make the RMS in horizontal and vertical direction less than lcm and 1.5cm respectively.
出处
《测绘科学与工程》
2016年第5期10-14,共5页
Geomatics Science and Engineering
