大气折射率和棱镜折射率对全站仪测距的影响
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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.
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.
引文
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[3]曲兴华,职广涛,张福民,等.利用信号拼接提高调频连续波激光测距系统的分辨力[J].光学精密工程,2015,23(1):40-47.
[4]王选钢,缑宁祎,张珂殊.相位式激光测距谱分析鉴相的无偏改进[J].光学精密工程,2012,20(4):888-895.
[5]金群锋.大气折射率影响因素的研究[D].杭州:浙江大学,2006.
[6]EDLN B.The refractive index of air[J].Metrologia,1966(2):71-80.
[7]吉宁可,张福民,曲兴华,等.基于相位差测频法调频连续波激光测距技术[J].中国激光,2018,45(11):145-152.
[8]中华人民共和国铁道部.高速铁路工程测量规范:TB 10601-2009[S].北京:中国铁道出版社,2010.
[9]ANDO S,FUJIGAYA T,UEDA M.Desity functional theory calculatios of photoabsorption spectra of organic molecules in the vacuum ultraviolet region[J].Japanese Journal of Appled Physics,2002,41(2A):105-108.
[10]陈文婧,于洁.高折射率光学树脂的研究进展[J].化学与生物工程,2017,34(8):10-15.