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在重力测量中,双程往返重复观测的零点位移率,以往常用作图法或以作图法为基础的计算法求取,但前者不够精确,后者又很繁杂。本文介绍一种准确可靠的简易计算法。它根据作图法原理,由线性回归分析法导出,只有两个步骤。(1)求取每一重复观测点的两次观测时间差和重力观测值差;(2)用公式直接求得仪器在该段时间内的零点位移移率。
In gravimetric measurement, the zero-point displacement rate of two-way round-trip repetitive observation was used as the method of graph or graph-based calculation, but the former is not precise enough and the latter is complicated. This article describes a simple and accurate method of calculation. It is based on the principle of mapping, derived by linear regression analysis, with only two steps. (1) Calculate the difference between the two observation time and the gravity observation value of each repeated observation point; (2) Use the formula to directly calculate the zero point displacement rate of the instrument during the period.