摘要
本文介绍了低纬子午环上电水准器的工作原理；讨论了电水准器在测定定位盘上盘的水平差时，其Ｄｅｔｉｃｏｎ的比例尺的测定方法及其测量精度；讨论了电水准器中狭缝倾斜量的测量方法；最后给出了水平差的测量范围以及可达到的精度，证明低纬子午环对轴系的要求是比较低的，而水平差的测量精度是相当高的。
In this paper, we introduce the principle of the electric-collimator which is used in the LLMC and discuss the method of determining the scale of the Reticon and its precision when the electric-collimator is used to determine the level error of the up-plate of the location plate. Then, the method of determining the tilt of the slit used in the electric-collimator is discussed. Finally, the range of the level error and its measuring accuracy are given, showing that for the LLMC, the axis system is not needed to be too strict, but the accuracy of the determinantion of the level error is needed to be very high.
出处
《云南天文台台刊》
CSCD
1994年第1期35-41,共7页
Publications of the Yunnan Observatoty
关键词
子午环
电水准器
水平差
Meridian circle
Instrument error
Level error
