自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 3    No. 2    December 1996

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IMPROVING THE ACCURACY OF VERTICAL ANGLE OBSERVATIONS
Xiao Fuhe   Yan Dezheng

Department of Resources Exploitation Engineering, Central South University of Technology, Changsha 410083, China

Abstract:The influences of instrumental errors, measurement errors, and the fluctuation of refraction angles,etc., on the observation accuracy of vertical angles are analysed. A new target used to observe the vertical angle was designed. Some measures are suggested to reduce the errors in observing vertical angles. They are proved to be effective by experiments.

 

Key words: vertical angle; zenith angle; trigonometrical levelling; accuracy of observation; atmospheric refraction

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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