论文部分内容阅读
大气折光影响是高精度水平角观测的主要误差来源。本文通过对水电工程监测网区域的温度观测和精密测角的试验,讨论了局部区域内大气折光场的分布特点和变化规律。此外,利用粗差检验等几种方法对水平角观测中大气折光产生的误差进行了分析,指出(高精度控制网的角度观测中)必须十分重视减弱大气折光的影响才能获得良好的结果。
Atmospheric refraction is the main source of error in high-precision horizontal-angle observations. This paper discusses the distribution characteristics and changing rules of the atmospheric refractive field in the local area through the test of the temperature observation and the precise angle measurement in the hydropower monitoring network. In addition, several methods, such as gross error test, are used to analyze the error of atmospheric refraction in horizontal observation. It is pointed out that we must attach great importance to attenuating the influence of atmospheric refraction to obtain good results.