关于精密水准折光改正的若干问题  

SOME REMARKS ON THE KEFRACTION CORRECTIONIN PRECISION LEVELLING

作　　者：梁振英[1] 李明[1] 

机构地区：[1]国家测绘局测绘科学研究所

出　　处：《测绘学报》1991年第1期66-75,共10页Acta Geodaetica et Cartographica Sinica

摘　　要：本文根据近地气层随机温度场的结构特征，提出了精密水准折光改正的基本原则——时间平均原则；根据决定论和概率论方法的差异和共同点分析比较了现有的几种折光模型；并根据大量的试验资料选择了一种实用的折光改正公式，为精密水准的折光改正提供了依据。On the basis of the structural feature of the stochastic temperature field in the near surface layer of atmosphere. a fundamental principle of applying refraction correction in precision levelling, i. e. The principle of time average. is proposed in this paper. Some existing refraction models have been compared and analysed in light of the diversity and common characteristics between deterministric approach and staitistical one. A practical formula for refraction correction has been chosen based on the analysis of a vast quan- tity of experimental data. It is applicable to compute the refraction correction in preci- sion levelling.

关 键 词：水准测量 水准 折光 改正 

分 类 号：P224[天文地球—大地测量学与测量工程]