EGM2008模型在GPS高程转换中的适用性探讨  

EGM2008 Applicability of the GPS Height Transformation

作　　者：路媛琦 章传银[2] 李圳[1] 

机构地区：[1]山东科技大学测绘科学与工程学院,山东青岛266590 [2]中国测绘科学研究院,北京100039

出　　处：《城市勘测》2017年第1期91-94,100,共5页Urban Geotechnical Investigation & Surveying

摘　　要：传统高程测量方法在地形复杂地区和已知水准点较少的情况下难以实施高程控制测量。本文提出了利用GPS获得的大地高与EGM2008模型结合获取高程异常值,从而通过GPS获取的大地高和高程异常值拟合求出控制点正常高的方法,经在不同测区验证表明,此方法可以达到四等水准测量的精度,提高了高程控制测量的效率。The conventional height measurement method cannot be applied in height control surveying of complicated areas with less already known benchmarks. This paper proposed a method combing GPS- derived geodetic height with EGM2008 to retrieve height anomaly,which is used in the simulation with GPS-derived geodetic height to retrieve the normal height of control point. Tests in different areas indicated that four-level accuracy could be reached by using this method which could also raise the efficiency of height control surveying.

关 键 词：EGM2008模型 高程异常 GPS高程拟合 

分 类 号：P224[天文地球—大地测量学与测量工程]