摘要
大气折光是测绘领域数据采集时的主要误差来源之一。本文从大气折射率与大气密度的关系入手,论述了大气折光的两种形式,详细分析了大气折光对天顶距测量和光电测距的影响,进一步论证了在温度梯度逆转时刻进行观测可以有效地削弱大气折光误差对测量结果的影响。
Atmospheric refraction is the one of main error sources in surveying filed. From the relationship between the atmospheric refraction and density, this paper discussed the two forms of atmospheric refraction, and analyzed its effect on zenith angle and distance t. Research conclusion showed that the errors of atmospheric refraction could been weakened at the time of temperature gradient reversion.
出处
《测绘科学》
CSCD
北大核心
2012年第6期26-28,36,共4页
Science of Surveying and Mapping
关键词
天顶距
电磁波测距
大气折光
温度梯度
逆转
zenith angle
EDM
atmospheric refraction
temperature gradient
reversion
