http://www.gissky.net- GIS空间站

用一个水准网说明依据改正数进行粗差处理可能导致错误,而且粗差能否被正确处理与其所处位置有关。为解决此问题,提出局部分析法。局部分析法从多维平差问题的函数模型出发,根据设计矩阵得到一个被观测量的多个独立观测,包括被观测量的观测值和其他观测值的函数,并给出根据平差问题的设计矩阵确定这些函数的方法。根据被观测量的独立观测数即可判断其观测值能否容忍粗差。在此基础上提出一种基于局部分析法的粗差探测方法,最后给出一个测角网示例。 更多还原

【Abstract】 As demonstrated by an example of a leveling network,existing methods of correcting gross errors based on residuals have a few shortcomings including the dependence on the location of gross errors within the leveling network.To address these problems,local analysis method(LAM) is proposed.In multidimensional adjustment problem,an observed quantity usually can be expressed as function of other observed quantities.Then it can be obtained a group of indepen-dent observed values of the observed quant... 更多还原