局部GPS水准高程拟合在线路工程中的应用研究  

Application of GPS Leveling Height Fitting to Zonal Construction

作　　者：杨国林[1] 李建章[1] 姚德新[1] 

机构地区：[1]兰州交通大学土木工程学院,甘肃兰州730070

出　　处：《兰州交通大学学报》2010年第6期53-56,共4页Journal of Lanzhou Jiaotong University

基　　金：国家自然科学基金(40871208)

摘　　要：带状控制网布设是铁路公路建设的关键环节,通过西部海拔较高地区工程实例获取的正常高,结合GPS大地高,拟合计算高程异常,得到点的高程并分析其精度.计算表明:在该地区GPS拟合水准可达到三等水准测量精度,能够满足交通工程施工测量的需要.The laying-out of the zonal construction control network is a key step in railway and highway construction.This research,by obtaining the normal height from the projects in western high-altitude area,in combination with GPS geodetic height,carries out a fitting calculation of height anomaly,then calculates the normal height of other points whose precision is then given thorough analysis.The result indicates that third-grade-leveling accuracy can be achieved in such areas by using GPS height fitting,which qualifies as a method in construction survey.

关 键 词：GPS/水准 高程异常 曲线拟合 

分 类 号：P258[天文地球—测绘科学与技术]