水平摆倾斜仪“数尺”记录法的可行性

FEASIBILITY OF THE RULER METHOD USED IN HORIZONTAL PENDULUM TILTMETER

水平摆倾斜仪“数尺”记录法经廿多个台站六年来的使用,取得了良好效益。本文导出其误差公式并进行了精度分析,论证了该法的可行性。

It is called the ruler record method that the light beam (lens) of the record in the horizontal pendulum tiltmeter is taken the place of a graduated glass (or steelless) ruler with millimeter, making each time signal line in the photographic paper to take the picture of ruler, by which the deviation values of the recorded curve at full hours is read. This method can obtain the reading quickly, precisely and without the effect of the expanding and contracting of photographic paper. A good efficiency is got since the method is used in more than twenty stations for six years. In this paper, the error formula is derived and the precision is analysed. Finally,the feasibility of spreading further the ruler method is verified.