宝兰高铁某标段CPI复测数据处理与稳定性分析

Data Processing and Stability Analysis of CPI Retest Data in a Certain Section of Baolan Highspeed Railway

介绍了宝兰高铁某标段CPI平面控制网复测技术方案,通过二等GPS测量进行外业数据采集得到复测数据,利用南方测绘GNSS数据处理软件对复测数据进行基线解算以及网平差处理得到复测坐标,然后将复测坐标与原测坐标数据进行数据分析、对比得出结论,判断CPI网点是否发生变化,为后续线路施工及轨道精调提供可靠的依据。

This article introduces the re-testing technical scheme of CPI for some section of Baolan Highspeed railway.The second-class GPS measurement is then used to collect the re-measurement data of the field data.The southern surveying and mapping GNSS data processing software is also applied to calculate the baseline data of the re-test data.The re-measurement coordinates are obtained through network adjustment processing and then analyzed and compared with the original measured coordinate data to determine and judge whether the CPI network points change,thus providing a reliable basis for subsequent line construction and fine track adjustment.