基于二次曲面拟合的GPS测量高程代替水准高程可行性分析与验算  

Feasibility analysis of GPS leveling based on quadric surface fitting

作　　者：章思亮[1] 

机构地区：[1]山东省水利勘测设计院,济南250013

出　　处：《工程勘察》2016年第8期64-66,70,共4页Geotechnical Investigation & Surveying

摘　　要：实际工作中,由于起算面的不同,GPS拟合高程不能代替水准高程。水准高程一般从高等级水准点采用水准联测的方式获得。本文从校正常高程起算面入手,使拟合高程起算面与水准高程起算面接近重合,并采用二次曲面拟合的方式对拟合高程残差进行处理,得到可以代替水准高程的GPS拟合高程值。In the actual work,because of the different datum,GPS fitting elevation can＇t take place of the leveling elevation. Through the way of connecting surveying,the point leveling elevation can be obtained from high grade bench marks. This article proceeds with correcting the elevation starting surface to make the fitting elevation starting surface and leveling elevation starting surface coincidence and then deals with fitting elevation residuals using quadric surface fitting method to get the GPS fitting elevation which can take place of the leveling elevation.

关 键 词：GPS拟合高程 起算面校正 水准高程 二次曲面拟合 

分 类 号：P228.4[天文地球—大地测量学与测量工程]