Influences of GPS Point Coordinate Selection on Metro Intersection Area Control Network. Issue 6 (March 2020)

• Record Type: Journal Article
• Authors: Xu, Yiteng; Deng, Peirong; Wang, Rongli; Yu, Zhifa; Li, Lixin; Liu, Hewen; Xu, Feng
• Is Part Of: IOP conference series. Volume 780:Issue 6(2020)
• Publication Date: 2020-03
• Subjects: Materials science -- Periodicals; 620.1105
• DOI: 10.1088/1757-899X/780/6/062050
• Languages: English
• ISSNs: 1757-8981

Abstract

Abstract: At present, there are more and more crossover interchange nodes in Metro lines. The selection of coordinates of overlapping GPS control points is the key to the layout of control networks in the extension and intersection areas of Metro lines. The selection of GPS point coordinates directly affects the overall adjustment results of the control network, and further affects the measurement and monitoring work during the follow-up construction and operation. According to the actual engineering case, the influence of different starting coordinates of GPS points in the cross region on the results of precision conductor points was systematically analyzed and studied, then summarize the problems in the above cases, and the corresponding solutions are given. Finally, the systematic solutions are summarized for the similar projects currently common in China.