宁慈铁路CPⅡ平面控制网GPS测量技术

GPS survey technology for CPII horizontal control network of Ningci railway

文章以宁波至慈溪市域铁路SGCX06标CPⅡ级平面控制网GPS复测数据为依据,阐述铁路施工CPⅡ平面控制网复测的实施方法、流程、数据处理等,采用内业软件平差计算比较和现场察看点位标石的分析方法,选择可靠稳定的起算数据作为固定基准,对多期观测数据进行最优处理,评定整网的可靠性和稳定性,确保CPⅡ控制网复测精度和质量,用于指导类似工程施工测量。

This article is based on the GPS resurvey data of the CPII level horizontal control network of the SGCX06 section of the Ningbo Cixi city railway,and elaborates on the implementation methods,processes,and data processing of the resurvey of the CPⅡ level horizontal control network in railway construction.Using internal software adjustment calculation comparison and on-site observation of point markers analysis methods,reliable and stable starting data is selected as a fixed benchmark,and the optimal processing of multi-period observation data is carried out to evaluate the reliability and stability of the entire network,ensure the accuracy and quality of CPⅡ control network retesting,used to guide similar engineering construction surveying.