地铁GNSS数据处理精度提升优化方法  

Optimization Method for Improving the Precision of Metro GNSS Data Processing

作　　者：陈小军 黄江雄 周晓卫 曹骞 CHEN Xiaojun;HUANG Jiangxiong;ZHOU Xiaowei;CAO Qian(Changsha Planning&Design Survey Research Institute,Changsha 410007,China)

机构地区：[1]长沙市规划勘测设计研究院,湖南长沙410007

出　　处：《城市勘测》2024年第2期137-141,共5页Urban Geotechnical Investigation & Surveying

摘　　要：GNSS控制测量为地铁施工建设提供高精度首级控制点,本文以长沙地铁7号线为例,在GNSS数据处理过程中,通过采用CORS虚拟参考站技术、选取独立闭合基线、采用GAMIT软件进行基线解算三种优化方法,可以明显提高GNSS控制网的精度和可靠性。GNSS control survey provides high-precision primary control points for subway construction.This paper took Changsha Metro Line 7 as an example.In the process of GNSS data processing,the accuracy and reliability of GNSS control network can be significantly improved by using CORS Virtual Reference Station technology,selecting independent closed baselines,and using GAMIT software to calculate baselines.

关 键 词：GNSS数据处理 CORS虚拟参考站 独立闭合基线 GAMIT 

分 类 号：P228[天文地球—大地测量学与测量工程] P207[天文地球—测绘科学与技术]