虚拟权平差在矿山近井网平差中的应用

来源期刊：中南大学学报(自然科学版)1995年第5期

论文作者：覃辉 李满苗

文章页码：578 - 583

关键词：矿山测量; 近井网; 精度基准; 虚拟权平差

Key words：mine survey; closest mine network; precision datum , adjustment with quasi weights

摘    要：虚拟权平差在扩建同级控制网的平差中有着广泛的应用,它具有能够得到与原网共精度基准的成果及计算工作量小的优点,本文将该平差法应用于矿山近井网的平差中,推导了测角近井网虚拟权平差的单位权方差迭代计算公式及近井网内的首级网点与近井点坐标参数的协因数矩阵,编制了电算程序,并用一实例展示了该法计算出的近弄网各项精度指标。

Abstract: The adjustment with quasi weights has extensive application in the adjustment of thesame order controI network expanded, which may obtain the same precision datum summaryof the old network and have smaller working conference of adjustment computation than theoverall adjustment. In this paper, it is applied to the adjustment of closest mine network, inwhich iterative compulation formula of unit weight variance and the cofactor matrices of co-ordinate parameter of the closest mine points and the first order control points of mining areaare derived. A given practical example is used to illustrate various precision exponents of theclosest mine network by the adlustment.