| 关于精密水准测量中因瓦标尺的温度改正问题 |
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| 引用本文： | 粱振英
,吴新华.关于精密水准测量中因瓦标尺的温度改正问题[J].测绘科学,1987(6). |
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| 作者姓名： | 粱振英 吴新华 |
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| 摘 要： | 标尺误差是精密水准测量的一项重要误差来源。其中由于温度变化而引起因瓦带的长度变化,是使用因瓦标尺带来的误差之一。国内外有关文献曾对此进行过深入的研究。我国过去在精密水准测量时,未测定所用因瓦标尺的综合膨胀系数,故在一等水准网平差中未对观测高差加标尺温度改正。本文主要针对将要开始的精密水准复测,讨论标尺的温度改正问题和我们的试验结果。
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THE CORRECTION OF THE TEMPERATURE-DEPENDENT DEFORMATION OF THE INVAR RULE IN THE PRECISE LEVELLING |
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| Abstract: | The rule error is one of the important error sources in the precise
levelling.An example is the length change of the rule along with the
change of the temperature when using invar rule.But in the precise
levelling of our country,the composite expansion coefficient of the inv-
ar rule was not measured,and the temperature correction of the rule
was not added into the measured altitude difference in the adjustment
of the first-order levelling net.This article discusses the problem of
the temperature correction of the rule and our experiment result as a
preparation for the coming precite relevelling of our country. |
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