华南地震2017，Vol.37Issue(1)：68-72,5.DOI:10.13512/j.hndz.2017.01.011
三角高程法在跨河水准测量中的主要误差及控制措施
Main Error and Control Measures of Cross-River Trigonometric Leveling
摘要
Abstract
Taking the Pearl River Delta regional datum frame cross river leveling measurement for example,the paper analyzed the principle and error sources of the trigonometric leveling scheme,and putted forward the method eliminating the high error of instrument by combining with the total station and the level of nearly horizontal line of sight readings measure instrument.The paper focused on the analysis of the impact of the error on the measurement and control measures.The results show that reasonable selection of river crossing point,line of sight control vertical angle,the length of sight,symmetry and other means of observation,can weaken the influence of atmospheric refraction error,earth curvature error,measure to increase the number of accuracy can be improved by using high precision electronic tachometer.关键词
跨河水准/三角高程测量/误差/全站仪Key words
Cross-river leveling/Trigonometric leveling/Error/Electronic Total Station分类
交通工程引用本文复制引用
何宗友,胡海驹,朱紫阳,钟焕良..三角高程法在跨河水准测量中的主要误差及控制措施[J].华南地震,2017,37(1):68-72,5.基金项目
广东省国土资源科技专项(GDGTKJ2016001) （GDGTKJ2016001）
广东省2015年度基础测绘计划项目 （）
