摘要
本文在近地面大气折光试验基础上,分析总结了折光系数 K 的变化特征,给出了折光系数不等差的中误差 M_(Δk),还对平原地区光电测距高程导线测量所能达到的精度及措施进行了探讨,并列举了试验实例。
On the basis,of near-surface atmospheric refraction tests,the variation charac- teristics of refraction coefficient K is analysed and summarized and the mean square error M_△~k of the unequal difference of the refraction coefficient is given.The possible precision of EDM trigonometrie leveling traverse in plain areas and the measures to be taken are discussed.
