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线形三角锁定向角是否参与平差,文献[1]作了规定。本文采用最佳权分配方法,导出了各观测元素权的计算公式,并分析了定向角的作用,供作业参考。一、概述为便于分析,设由偶数个正三角形组成的线形三角锁,如图1所示的坐标系统中,三角形边长设为2s,0、n+1为已知点。当观测各三角形内角及两端定向角时,共有n+2个条件,即图形、方位和定向角条件(或称横坐标投影条件)。在以下的权分配解算中,采用文献[2]所述G的绝对和为
Linear triangle locking angle whether to participate in adjustment, literature [1] made the provision. In this paper, the optimal weight distribution method is used to derive the calculation formula of the weight of each observation element, and the role of orientation angle is analyzed for reference. I. Overview In order to facilitate the analysis, suppose that the linear triangle lock formed by an even number of regular triangles, as shown in the coordinate system in FIG. 1, the side length of the triangle is set as 2s, and 0 and n + 1 are known points. There are n + 2 conditions when observing the internal angles of the triangles and the orientation angles at both ends, that is, the conditions of the figures, azimuths and orientation angles (or abscissa projection conditions). In the following distribution of weights, we use the absolute sum of G described in [2]