按垂直温差计算折光系数的方法之二
来源期刊:中南大学学报(自然科学版)1987年第3期
论文作者:肖复何
文章页码:251 - 256
关键词:三角测量; 高程测量; 大地测量; 测量平差; 折射率; 大气折射; 计算方法;折光系数;三角高程测量
Key words:triangalanon; altitude control survey; geodetic surveying; adjestment of measurement; refractivity; atmospheric refraction; computational method;refraction coefficient;trigonometric leveling
摘 要:本文根据Chaughey和Palmer(1979)的研究成果“对流边界层(即混合层)热通量H近似地随高度而线性减小”,提出了一种新的按垂直温差计算折光系数的方法。这种方法应用于山区或丘陵地区的三角高程测量中,能够提高折光系数和三角高程测量的精度。
Abstract: On the basis of the conclusion, that the heat flux H decreases approximately linearly with the heihht in the convective boundary layer (CBL), given by Changhey and Palmer (1979), this paper suggests a new method of computing the refraction coefficient with the vertical deffrence of temperature. This methoad being applicable to the trigonometric leveling in the mountainous region or hilly land, the accuracy of refraction coefficient and trigonometric leveling could be heightened.