EGM2008重力场模型在RTK三维水深测绘中的应用  

作　　者：房新玉[1,2] 刘炫 

机构地区：[1]交通运输部天津水运工程科学研究所,天津300456 [2]天津水运工程勘察设计院天津市水运工程测绘技术重点实验室,天津300456 [3]宁波市测绘时间研究院,浙江宁波315042

出　　处：《科技创新导报》2017年第24期15-17,共3页Science and Technology Innovation Herald

摘　　要：针对区域控制点较少,无法求解高程拟合参数时,且测区无似大地水准面时,如何利用RTK进行三维水深测量的问题。本文提出利用EGM2008重力场模型,结合GPS/水准进行RTK高程传递的方法。在华北某区域对该方法的适用性进行探讨,结果表明,应用EGM2008重力场模型为辅助的RTK高程传递可以达到图根水准测量精度的要求,满足RTK水位控制精度的需求。When the control points for the region is less,the elevation fitting parameters could not be solved,andthe quasi geoid has not gained,How to use RTK to measure3D bathymetry is a problem.In this paper,the methodof using EGM2008gravity field model and GPS/level to transfer RTK elevation is proposed.The applicability ofthis method is discussed in a region of North china,the results show that the application of EGM2008gravityfield model for RTK elevation transfer can achieve the precision of mapping control survey,meet the needs of RTKwater level control accuracy.

关 键 词：EGM2008重力场模型 RTK三维水深测绘 高程异常 

分 类 号：P223[天文地球—大地测量学与测量工程]