In different Geodetic networks the observations are measured repetitively. These observations, called original observations, are independent. At the design stage of the deformation monitoring network, either the mean value of the original observations or the original observations may be considered. Conventional Deformation Analysis (CDA) is based on the ordinary Least Square Estimation (LSE) that uses the mean value of the original observations. In this paper, the efficacies of results of CDA were investigated for the three different strategies 1o ordinary LSE, 2o LSE with original observations and 3o both LSE with original observations and subnetwork design. To perform the investigation of reliability, leveling network and GPS network were designed, and the mean success rate (MSR) of the methods were computed. The MSRs of the third strategy gets improvements on MSR about 34% for leveling network and 38% for GPS network according to ordinary LSE when three of eight points displaced.

在不同的大地测量网络中，观测值是重复测量的。这些观察称为原始观察，是独立的。在变形监测网络的设计阶段，可以考虑原始观测值的平均值或原始观测值的平均值。常规变形分析（CDA）基于使用原始观测值的平均值的最小二乘估计（LSE）。本文研究了CDA结果对于三种不同策略的有效性：1o普通LSE，2o具有原始观测值的LSE和3o既具有原始观测值的LSE，又具有子网设计。为了进行可靠性研究，设计了水准测量网络和GPS网络，并计算了方法的平均成功率（MSR）。