摘要
为研究利用千寻定位GNSS RTK技术进行铁路定测阶段中线测量(平面纵、横向及中桩高程)精度等问题,以基于同一铁路定测阶段平面CPI控制网和线路水准基点为测量基准进行中线测量数据采集,比对分析千寻定位GNSS RTK技术与传统单基站GNSS RTK获取数据的较差和中误差,并对两种方式测量结果数据进行研究分析。研究表明,千寻定位的GNSS RTK技术与单基站GNSS RTK测量结果平面坐标较差中误差和高程较差中误差均≤0.05 m,小于《铁路工程测量规范》中线测量平面纵横向限差0.1 m及中桩高程限差0.1 m的规定,故基于千寻定位的GNSS RTK技术可在一定程度上替代传统单基站GNSS RTK进行铁路定测阶段中线测量。
In order to study whether the center line survey in the railway location survey stage using GNSS RTK technology could meet the requirements of“code for railway engineering survey”for the accuracy of the center line survey plane vertical and horizontal direction and the elevation of the center stake,the center line survey data collection was carried out based on the plane CPI control network and the line benchmark control survey datum in the same railway location survey stage.The paper compared and analyzed the difference and mean square error between GNSS RTK technology and single base station GNSS RTK Technology in obtaining center pile plane elevation data,studied and analyzed the measurement results of the two methods.The conclusion is drawn that,the difference and mean square error of plane coordinate and elevation between GNSS RTK technology and single base station GNSS RTK measurement results is not more than 0.05 m,The error is less than the limit of 0.1 m in vertical and horizontal directions of the central line survey plane and 0.1 m in the elevation of the center stake in the code for railway engineering survey.The results shows that the GNSS RTK Technology Based on the Qianxun positioning can replace the traditional single base station GNSS RTK Technology in the railway location survey stage to a certain extent.The feasibility of GNSS RTK Technology based on Qianxun positioning in other measurement applications in railway location survey stage is discussed as well.
作者
梁旺
Liang Wang(China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan 430063,China)
出处
《铁道勘察》
2022年第4期20-23,共4页
Railway Investigation and Surveying
关键词
千寻定位
GNSS
RTK
铁路定测
中线测量
测量精度
Qianxun Positioning
GNSS RTK
railway location survey
midline survey
measurement accuracy
