一种改进极坐标二次基准实时差分方法在地铁自动化监测中的应用  

Application of a real time difference method of improved polar quadratic datum in metro automatic monitoring

作　　者：黄小斌 姜叶翔[2] 胡雷鸣 HUANG Xiaobin;JIANG Yexiang;HU Leiming(Hangzhou Hanggang Metro Line 5 Co.,Ltd.,Hangzhou 311100,China;Hangzhou Metro Group Co.,Ltd.,Hangzhou 311100,China;SGIDI Engineering Consulting(Group)Co.,Ltd.,Shanghai 200000,China)

机构地区：[1]杭州杭港地铁五号线有限公司,浙江杭州311100 [2]杭州市地铁集团有限责任公司,浙江杭州311100 [3]上海勘察设计研究院(集团)有限公司,上海200000

出　　处：《测绘通报》2023年第2期177-181,共5页Bulletin of Surveying and Mapping

基　　金：浙江省交通运输厅科技计划项目(202221)。

摘　　要：针对地铁保护区自动化监测系统测量结果易受温度、湿度、气压、大气折光和列车振动等因素影响的问题,而对某一因素进行测定分析是极为困难的,本文提出了一种改进的极坐标二次基准实时差分方法。基于新方法构建了自动化监测系统并进行精度评估,案例分析表明,新方法可有效削弱外部环境因素对测量结果的影响,能够精确获取监测点三维坐标信息,进一步提高了自动化监测系统的监测精度,能够更加精准反馈地铁外部施工对轨道交通结构变形的影响。In view of the problem that the measurement results of the automated monitoring system in the subway protection area are easily affected by temperature, humidity, air pressure, atmospheric refraction, train vibration and other factors, and it is extremely difficult to conduct quantitative analysis on a certain factor, therefore, this paper proposes an improved polar coordinate secondary datum real time difference method, builds the automated monitoring system based on the new method and carries out accuracy evaluation, Case analysis shows that the new method can effectively weaken the impact of external environmental factors on the measurement results, accurately obtain the three-dimensional coordinates of monitoring points, further improve the monitoring accuracy of the automated monitoring system, and more accurately feedback the impact of external construction on the rail transit structure.

关 键 词：极坐标 二次基准 实时差分 距离改正 方位角改正 高差改正 

分 类 号：P258[天文地球—测绘科学与技术]