自由网基准转换的概括模型研究

General model about datum transformation of free network

在自由网平差中,为避免基准不同需要对同一观测数据进行多次平差。本文提出一种自由网基准转换的概括模型:根据已知基准条件下的平差值和另一未知基准条件,推导出该基准下平差值的通用计算公式。它不仅适用于经典自由网平差、普通秩亏自由网平差、参数加权平差和拟稳平差下不同基准转换计算,而且也适用于不同自由网基准之间转换。

In free network adjustment, repeated adjustment of the same observation data for different datum is necessary. This pa- per purposed a general model about datum transformation of the free network ： the general transformation model about parameters values of the datum could be derived according to the adjustment of known datum and another unknown datum condition. This model would not only be applied in datum transformation about adjustment of classical free network, adjustment for rank defect free network, parameters adjustment with weighted and quasi-stable adjustment, but also be suitable in the datum transformation for different free networks.