This article is to study the relative positioning accuracy of B1I/B2a of BeiDou-3 Navigation Satellite System(BDS-3).The data of 10 Multi-GNSS Experience(MGEX)tracking stations in Austral-ia were processed by GAMIT software.The experimental results showed that the maximum standard devia-tion(STD)of Global Navigation Satellite System(GLONASS)G1/G2 north(N),east(E),length(L)baseline vectors reached 8.00 mm,12.10 mm and 10.60 mm,respectively;the maximum standard deviation of up(U)baseline vector of BeiDou-2 Navigation Satellite System(BDS-2)B1I/B2I is 28.70 mm.The baseline length was positively correlated with the standard deviation(STD)of baseline length.The mean square error and weighted root mean square(WRMS)of BDS-3 B1I/B2a,Galileo satellite navigation system(Galileo)E1/E5a and Global Positioning System(GPS)L1/L2 are generally small,with high accuracy;BDS-2 B1I/B2I and GLONASS G1/G2 are relatively large and low in accuracy.The experimental results further show that the positioning precision of BDS-3 B1I/B2a has been greatly im-proved compared with that of BDS-2 B1I/B2I.
BeiDou-3 navigation satellite systemstandard deviation of baseline vectorstandard devia-tion of baseline lengthmean square error of point positionweighted root mean square
维普
万方数据
