Based on the analysis of orthogonal data, we discuss the problem of dealing with non-orthogonal data and build a relevant mathematical models, Based on the analysis of designed experiments with missing observations, strict method is given for data processing of the fractional addition experimental design.

This paper takes Dashuipo GPS network as an example that only adopting the original data of the plane network and the adjustment method of the GPS network in the plane control system,moreover analysing and comparing th.

When restriction adjustment or united adjustment on GPS framework,It s necessary of checking quality of Original data to ensure not to reduce the preci-sion of GPS framework because of the effect of restriction conditions.