摘要
随着长距离新型跨海桥梁的不断涌现,桥梁平面控制网的精度要求也越来越高,需要应用高精度的GPS数据处理软件进行基线解算,GAMIT是其中的代表之一,其优点是运算速度快、处理长基线效果好、精度高。介绍了GAMIT软件组成、解算流程,分析了数据准备和基线解算的基本过程和方法,总结了基线解算中的一些技巧;最后,应用港珠澳大桥首级GPS控制网的观测数据进行了算例分析,验证了GAMIT用于长距离跨海桥梁平面控制网的高精度及其可靠性。
With constantly emergence of new long-distance sea-crossing bridges,the required accuracy of horizontal control network for bridge is getting higher and higher.Therefore high precision GPS data processing software for baseline solution are required.GAMIT is one of such software with quick operating speed,good effect to long baseline solution and high precision.The components and the processing procedure of GAMIT were introduced firstly,and then the basic processes and methods of data preparation and baseline solution were analyzed with some skills for the baseline solutions being summarized.Finally,the high precision and reliability of GAMIT to horizontal control network for long-distance sea-crossing bridge were verified by the example computation and analysised based on the observed data of the primary GPS control network for Hong Kong-Zhuhai-Macao Bridge.
出处
《地理空间信息》
2012年第2期79-81,181,共3页
Geospatial Information
