基于不同参考基准的GPS监测网变形分析  

Analysis of GPS Monitoring Network Deformation Based on Different Reference Datum

作　　者：曹奇[1] 岳东杰[1] 高永攀[1] 

机构地区：[1]河海大学测绘科学与工程系,南京市210098

出　　处：《勘察科学技术》2013年第5期22-24,35,共4页Site Investigation Science and Technology

摘　　要：为讨论变形分析中不同参考基准对基准点位移差异性,该文以某大桥GPS监测网为例,给出了GPS监测网平差、基准选取和基准转换的方法,编写程序得到大桥基准点两期坐标转换成果,并绘制固定、拟稳和重心基准位移场图,分析得到大桥GPS监测网适于采用固定基准或拟稳基准。To discuss the displacement differences of different reference datum in deformation analysis, combined GPS monitoring network of a bridge with an example, the GPS monitoring network adjustment, the datum selection and transformation methods are given, two coordinates transformation results of bridge reference points are programmed, and a displacement field figure with fixed , quasi-stable and gravity da-tum are drawn, finally the bridge GPS monitoring network is suitable for fixed datum or quasi-stable da-turn through the analysis.

关 键 词：变形分析 GPS监测网 基准转换 自由网平差 参考基准 

分 类 号：P228.4[天文地球—大地测量学与测量工程]