摘要
运用控制变量法对温度和光照强度对电子水准仪读数的影响进行了定量分析。结果表明,电子水准仪读数受光照强度影响较小,但受温度影响较大,其中大气折光和i角是影响电子水准仪读数精度的两个主要方面;并根据实验结果,为如何减小观测误差、提高观测精度提供了参考意见。
This paper used the controlling variables method to quantitative analysis the influences of temperature and light intensity on electronic level reading. The results showed that electronic level reading was less affected by light intensity, but influenced greatly by temperature which affects the reading accuracy mainly through atmospheric refraction and i angle. Besides, the paper provided a few reference comments on how to improve the observation precision and reduce measurement error based on experiment results.
出处
《地理空间信息》
2017年第1期87-89,94,共4页
Geospatial Information
基金
一测中心科技创新主任基金资助项目(FMC2014010)
中国地震局震情跟踪课题资助项目(2014020205)
关键词
电子水准仪
精密水准
大气折光
光照强度
系统误差
electronic level
precise leveling
atmospheric refraction
light intensity
system error
