陀螺经纬仪快速定向新方法

来源期刊：中南大学学报(自然科学版)1987年第2期

论文作者：许纪隆

文章页码：125 - 128

关键词：陀螺经纬仪； 快速定向； 测量方法(测绘学)； 方位角测量； 定向误差

Key words：gyroscopic theodolites； hasty orientating； measurement method (geodesy)； azimuth determination； orientation error

摘    要：本文提出了一种在半周期内(约4分钟)确定陀螺摆动平衡位置的观测方法——三点法.此法的实质是:在陀螺轴摆动第一个周期的前半周期内观测9个分划线的时间读数,按忽略衰减影响的陀螺轴摆动方程式,可以独立求得三个摆动平衡位置的读数,取其平均值.计算是在一台袖珍计算机PC-1500上按预先存入专门编制的BASIC语言程序进行的.对JT-15陀螺经纬仪的实验和生产测定结果表明:三点法的观测精度很好,三次测定摆动平衡位置的平均值的中误差小于±4.9”,一次测定陀螺方位角的精度与中天法的精度相同.

Abstract: In this paper a new method (three points method) is proposed for determining le vibrating balance position of the gyro-axis within a half of vibrating period about 4 minutes). The essential of the mehtod is as follows: In the first half of the first vibrating period of gyro-axis, time readings for ine line graduations were taken, then using the vibrating equation of the gyro- axis, which neglects the effect of damping, the readings for three vibrating balance positions can be independently calculated, the average being taken. Computation is carried out on Sharp PC-1500 pocket computer by pre-written program using the BASIC language. The results got from experiment and production measurementusing the gyro-theodolite model JT-15 demonstrate that the precision of the measurement using the new method is quite good, the mean square error of the average for the vibrating balance position is ± 3. 9 second; the recision of the gyro-azimuth measurd by one set is the same as that obtained by the transitmethod.