摘要
为探究全站仪测距时的大气和棱镜常数两项改正产生的原因,分析了大气折射率和棱镜折射率对全站仪测距精度的影响,指出了气温和大气压是影响大气折光率的主要因素,并验证了高等级测量时取位要求的合理性.研究结果表明如不进行气压和气温改正,测距产生的最大相差为72mm/km.总结出的不同全站仪棱镜常数设定值,便于测量人员工作时查阅.
In order to explore the causes of the correction of atmospheric and prismatic constants in the electronic total station ranging,the effect of atmospheric and prismatic refractive index on the accuracy of total station ranging is analyzed.It is pointed out that temperature and atmospheric pressure are the main factors affecting atmospheric refractive index.Then the rationality of positioning requirements in high-level measurement is verified.The results show that the maximum phase difference produced by the range is 72 mm/km without air pressure and temperature correction.The summary of the different total station prism constant settings is easy for the surveyor to consult when working.
作者
张宏
袁星星
胡磊
ZHANG Hong;YUAN Xingxing;HU Lei(School of Science,Chang'an University,Xi'an 710064,China;Nanchang Engineering Co.,Ltd.,24 Bureau of China Railway,Nanchang 330000,China)
出处
《徐州工程学院学报（自然科学版）》
CAS
2019年第1期15-18,共4页
Journal of Xuzhou Institute of Technology(Natural Sciences Edition)
关键词
全站仪
大气折射率
棱镜常数
误差分析
total station
atmospheric refractive index
prism constant
error analysis
作者简介
张宏(1964-),男,教授,硕士生导师,主要从事桥梁结构的监测和结构计算研究;袁星星(1989-),男,硕士研究生,主要从事工程测量和桥梁结构计算研究.
