摘要
基于GAMIT软件进行高速铁路框架控制网CP0基线解算对专业技术人员的专业技能要求较高,特别是基线解算过程中常出现报错等容易“卡壳”的难题。采用天宝公司的新一代后处理软件Trimble Business Center(TBC V5.20),对照TB 10601—2009《高速铁路工程测量规范》中CP0基线解算及平差各项精度要求,首先对某高铁项目TBC基线解算2个关键技术参数设置进行比较,然后使用CosaGPS V5.20进行TBC基线解算结果质量和平差精度检核,最后将TBC平差计算的控制点三维和二维成果与GAMIT 10.7计算结果进行比较,以验证TBC软件进行CP0基线解算的可靠度和正确性。研究表明,通过设置天线模型为绝对相位中心改正模型和选择GPS+北斗卫星系统组合进行基线解算,得到基线较差和环闭合差、三维无约束和约束平差的基线向量改正数均满足规范要求,三维和二维成果与GAMIT 10.7计算结果吻合,表明采用TBC软件进行基线长度≤200 km的高速铁路CP0基线解算可行。
In order to solve the high threshold requirements for professional technical personnel in the current use of GAMIT software for frame control network CP0 baseline calculation of high-speed railway,especially the problem of getting stuck due to error prompts during the baseline calculation process.The paper used Trimble Business Center(TBC V5.20),a new generation post-processing software from Trimble Company,and compared the accuracy requirements for CP0 baseline calculation and adjustment in the Code for Engineering Survey of High-speed Railway(TB 10601—2009).Firstly,two key technical parameters for TBC baseline calculation of a high-speed railway were compared.Then,COSA GPS V5.20 was used to check the quality and adjustment accuracy of TBC baseline calculation results.Finally,the three-dimensional and two-dimensional results of TBC adjustment calculation were compared with the GAMIT 10.7 calculation results to verify the reliability and correctness of TBC software for CP0 baseline calculation.Research shows that,by setting the antenna model as the absolute phase center correction model and selecting GPS+BeiDou satellite system combination for baseline calculation,baseline deviation and loop closure deviation,the baseline vector correction values for both unconstrained and constrained adjustment in 3D meet the specification requirements,and the 3D and 2D results are consistent with the GAMIT 10.7 calculation results.All indicator statistics indicate that using TBC software for high-speed railway CP0 baseline calculation is completely feasible when the baseline length is≤200 km.
作者
徐小左
XU Xiaozuo(China Railway First Survey and Design Institute Group Co.,Ltd.,Xi'an 710043,China)
出处
《铁道勘察》
2025年第4期21-26,47,共7页
Railway Investigation and Surveying
关键词
高速铁路
CP0控制网
基线解算
天线模型
卫星系统
high speed railway
CP0 control network
baseline calculation
antenna model
satellite system
作者简介
徐小左(1985-),男,2010年毕业于西南交通大学大地测量学与测量工程专业,工学硕士,高级工程师,E-mail:732371222@qq.com。
