北斗系统在高速公路控制网中的应用与精度分析

Application analysis of BeiDou System in expressway control network

目前,国内高速公路控制网大都基于GPS系统建设。伴随着我国自主建立的北斗卫星导航系统的逐步完善,为公路行业摆脱GPS系统提供了可能。本文以某高速公路建设重点项目为例,采用GAMIT专业基线解算软件分别处理单一的北斗数据与GPS系统数据,对基线解算精度、测站点坐标平差精度进行比较分析。研究表明,基于北斗卫星系统的控制网解算精度与GPS系统的控制网解算平差精度处于同一水平,在观测条件优良的情况下甚至优于GPS系统。充分证明了北斗卫星导航系统在高速公路控制网的适用性与可行性。

At present,most domestic expressway control networks are built based on CPS.With the gradual improvement of BeiDou Satellite Navigation System independently built by China,it is possible for the highway industry to get rid of GPS.Taking a key project of expressway construction as an example,this paper uses GAMIT professional baseline solution software to process BeiDou data and GPS data respectively,and compares and analyzes the baseline solution accuracy and the coordinate adjustment accuracy of survey stations.The research shows that the accuracy of control network solution based on BeiDou is at the same level as that of GPS,and even better than GPS in the case of excellent observation conditions.The applicability and feasibility of BeiDou in expressway control network are fully proved.