GPS测量地面沉降的可靠性及精度分析  

ANALYSIS ON RELIABILITY AND ACCURACY OF SUBSIDENCE MEASUREMENT WITH GPS TECHNIQUE

作　　者：杨建图[1] 姜衍祥[1] 周俊[1] 黄立人[2] 路旭[1] 

机构地区：[1]天津市控制地面沉降工作办公室,天津300061 [2]中国地震局第一监测中心,天津300180

出　　处：《大地测量与地球动力学》2006年第1期70-75,共6页Journal of Geodesy and Geodynamics

摘　　要：根据对1995～2004连续10年的GPS大地高与精密水准测量数据的对比研究，验证了两种方法的实际精度，结果表明：GPS大地高变化完全可以像精密水准测量一样高精度地获取水准测量点的沉降值，可用于地面沉降监测。On the basis of the research on the contrast between GPS and precise leveling from 1995 to 2004, the actual accuracy of the two methods is tested. It is proved the value of the geodetic height＇s differences obtained from GPS. used in monitoring land subsidence. that land subsidence is also reflected by Therefore the GPS technology can be used in monitoring land subsidence.

关 键 词：天津市 地面沉降 GPS 精密水准测量 精度 

分 类 号：P227[天文地球—大地测量学与测量工程] P224.1[天文地球—测绘科学与技术]