【摘要】 首先分析现有的自由网平差解算方法,在重点分析假观测值法的基础上,提出了加权自由网平差、秩亏网平差和拟稳平差的一种直接解算算法,推导出了相应的计算公式和解算步骤。提出的解算方法不需组成法方程式,但满足最小二乘准则和不同基准约束条件,可直接得到与其他解法完全相同的解^L和^X。通过实例的比较计算分析可以看出,所提出的算法原理简单,计算简便易行。更多还原

【Abstract】 In the rank-deficient adjustment, there are lots of adjustment methods. In order to get the unique solutions, it must satisfy the principle "V~TP~V=min" and some kind of minimum norm. No matter what adjustment method is used, the normal equation system must be constructed and solved, and then caculate the vectors V,.Using the direct algorithm proposed, we can find the same adjusted results V,,,, in which it doesn’t need to construct and solve the normal equation system.更多还原