GPS测量在公路控制网建设中的应用

GPS测量利用卫星导航定位系统,测量精度高,速度快.以浙江衢州平山桥至团石公路的控制网测量为例,外业测量采用三角网布设控制网,通过GPS载波相位相对定位测量技术对控制点进行详细测量；内业通过基线解算进行基线向量平差,控制网通过无约束和约束平差,在误差调整后,采用相对动态定位技术进行控制点加密,实现快速、高精度的公路控制网测量.

The application of GPS survey in highway control network construction

GPS survey is based on the navigation and position system directed by satellite and is known to be of high precision and high speed.In the case of control survey from Pingshan Bridge to Tuanshi Highway in QuZhou,Zhejiang,triangle network was used for the layout of control net in field work and the relative location survey technique by GPS carrier phase analysis was used for the detailed measurement of points.In interior work,the baseline computation was used for baseline vector adjustment and the unconstrained and constrained adjustment for the control network.After the the error was adjusted,the relative dynamic positioning technique was used to compact the control points.The combined method can lead to the fast measurement of high precision of the highway control network.