以等价观测值法平差导线网

导线网是建立平面控制网的主要方法之一。由于导线网的点数较多,使得在微型计算机上进行平差计算带来困难。本文针对导线网的特点,提出以等价观测值的方法,按结点平差。平差的原理是每条导线节可以建立三个条件方程式,把条件方程式转化为误差方程式。这些误差方程式对应着一组虚拟观测值,并且证明这些虚拟测值是互相独立的,这样给平差带来方便。

Adjustment of Traverse Nets by Using Equivalent Observation Value

The traverse net is one of the main method of seting up horizontal control nets. Because there are mang points of traverse net, it is difficult to adjust the calculation with the microcomputer. Considering characteristics of the traverse net, this paper suggests that adjustment can be made according to points of junction by using equivalent observa tion value. The principle of adjustment is that with one traverse link-three condition equations are set up, and then thdy are transformed into error equations. These error equations correspond to a group of fictitious observation vales, and it can proved that they are independent of eaeh other, thus making adjusment calculation more convenient.