公路工程平面控制网中应用GPS定位技术的误差分析  

Error Analysis of GPS Positioning Technology in Highway Engineering Plane Control Network

作　　者：吕济 Lu Ji

机构地区：[1]中铁十九局集团第二工程有限公司,辽宁辽阳111000

出　　处：《辽宁省交通高等专科学校学报》2022年第1期5-9,共5页Journal of Liaoning Provincial College of Communications

摘　　要：从投影带以及投影面的选取、起始数据误差两个GPS测量精度的主要影响因素入手,针对公路工程平面控制网中如何准确应用GPS定位技术进行分析。所得结果为:投影带中央子午线以及投影面高程的选择对控制网至关重要,若测区有较大的平均高程时,计算时必须考虑投影面高程。起算误差对控制网有较大影响,建议从已知点入手进行GPS控制网的数据处理工作。This paper analyzes how to accurately apply GPS positioning technology in highway engineering plane control network from the selection of projection belt,and projection surface and the error of initial data,which are two main factors affecting the accuracy of GPS measurement.The results show that the selection of the central meridian of the projection belt and the elevation of the projection plane are very important to the control network.The starting error has a great influence on the control network,so it is suggested to start with the known points to process the data of the GPS control network.

关 键 词：平面控制测量 公路工程 GPS 数据误差 

分 类 号：U412[交通运输工程—道路与铁道工程]