RTKLIB多频多模差分算法定位精度分析

Positioning accuracy analysis of multi frequency and multi mode difference algorithm based on RTKLIB

在开阔的楼顶使用华测B380OEM板与NovAtel PwrPak7接收机采集大约连续11 h的北斗与GPS卫星的星历数据及原始数据,将连续的卫星原始数据经RTKLIB差分算法计算出定位结果,分别对计算出的北斗B1单系统单频点定位、北斗B1+B3单系统双频点定位、北斗+GPS双系统单频点定位、北斗+GPS双系统双频点定位结果进行精度与稳定性分析。结果表明在连续时间内的北斗B1单系统单频点定位精度为2~3 cm,北斗+GPS双系统单频点定位精度3~4 cm,北斗B1+B3双频点定位精度4~5 mm,北斗+GPS双频点定位精度为3~4 mm。单频点定位稳定性低于双频点定位。

Using Huace B380 OEM board and NovAtel PwrPak7 receiver on the open roof collects the ephemeris data and original data of Beidou and GPS satellites for about 11 hours,calculates the positioning results by RTKLIB difference algorithm from the continuous satellite original data,and carries out the single frequency point positioning of Beidou B1 single system,double frequency point positioning of Beidou B1+B3 single system,single frequency point positioning of Beidou+GPS dual system,and double frequency point positioning of Beidou+GPS dual system accuracy and stability analysis.The results show that the positioning accuracy of single frequency point of Beidou B1 single system is 2~3 cm,that of Beidou+GPS dual system is 3~4 cm,that of Beidou B1+B3 is 4~5 mm,and that of Beidou+GPS is 3~4 mm.The stability of single frequency positioning is lower than that of double frequency point positioning.