起算数据误差对控制网精度影响的分析

Analysis of the influence of the initial data error on the precision of control network.

一个控制网的精度与所选择的起算数据有关,有时影响还相当显著,本文以统计检验的方法判断起算数据误差对控制网精度的影响程度,以便对起算数据进行选择。文中对菲列罗公式计算的验前测角中误差与平差后所得的测角中误差间的关系也进行了讨论。

The precision of a control network depends on how the initial data is selected. Sometimes,the influence is rathes remarkable. This paper adopts the statistical testing method to discriminate how the initial data error influences the precision of the control network, thus to tacilitate the selection of the initial data.It also discusses the relation between the primary mean error of angulation calculated by the Ferrero's formula and that obtained after the adjustment.