BDS/GPS在大型跨江通道工程首级平面控制网建设中的应用

Application of BDS/GPS in the Construction of the First Level Plane Control Network of Large-Scale Cross-River Tunnel Project

介绍了GAMIT高精度基线解算软件解算大型跨江通道工程GNSS(global navigation satellite system)首级平面控制网的方法,在某工程实例中,用GAMIT分别解算出BDS和GPS的高精度基线,用CosaGPS平差得到平面坐标,以GPS结果为基准,比较BDS与GPS的基线长度偏差和平差后的点位坐标偏差。结果表明:BDS可以独立用于大型跨江通道工程首级平面控制网的建设中。

This paper introduces the method of using GAMIT high-precision baseline solution software to solve the GNSS firstlevel plane control network of large-scale cross-river channel engineering.Through a project example,GAMIT is used to calculate the high-precision baseline of BDS and GPS,and the plane is obtained by CosaGPS adjustment.Coordinates,based on the GPS results,compare the baseline length deviation of BDS and GPS and the coordinate deviation of the points after the difference,and conclude that BDS can be used independently for the construction of the first-level plane control network of largescale cross-river channel engineering.