丘陵区GPS高程拟合初步研究  

Preliminary study on GPS height fitting in hilly region

作　　者：管真[1] 郑杨琳[1] 石风淼[1] 

机构地区：[1]西北核技术研究所,陕西西安701124

出　　处：《矿山测量》2010年第4期18-20,24,共4页Mine Surveying

摘　　要：丘陵区地势高低不平,行进困难,施测四等水准测量比较困难且精度难以保证。为提高工作效率,采用等值线法、平面拟合法和二次曲面拟合法,初步研究GPS高程拟合在丘陵区的应用,并通过实例加以说明。根据测区的实际情况,选择合适的拟合模型代替测区似大地水准面,拟合待测点高程异常,可以达到四等水准测量精度。It's difficult to do the fourth-order leveling survey with the assurable accuracy in hilly region,because of the irregularity hilly terrain.In order to improve the working efficiency,this paper illustrates a preliminary study on GPS height fitting in hilly region by using isoline method,plane fitting and conicoid fitting which explained by examples.According to the situation of the survey area,choosing appropriate fitting model to replace the survey area quasigeoid,the fitting accuracy of height anomaly could reach the specifications of the fourth-order leveling survey.

关 键 词：高程异常 平面拟合 曲面拟合 拟合精度 

分 类 号：P228.4[天文地球—大地测量学与测量工程]