GPS matavimo rezultatų koreliacijos įtaka, vertinant išlygintų dydžių tikslumą

Abstract

The geodetic observations, including GPS measurements, are influenced by a variety of external factors, making the measurements correlated. It is important to determine what influence produces the correlation of observations on the accuracy of a geodetic network. The article discusses how the results of a network adjustment are changed depending on, whether the correlation of observations was taken into account in the adjustment procedure or not. In the article, the formulas for including the correlation of chords in the adjustment procedure of GPS network are presented. Also, formulas for calculating accuracy of adjusted values of the network are presented in cases, when the correlation is involved in the adjustment and when it is omitted. It is concluded, that the formulas for calculating the accuracy of the adjusted network should be corrected, if the correlation of observations is not considered. [...].