GPS matavimų tiesinių modelių kovariacija
Santrauka
It is possible to eliminate the ionosphere influence and to solve the dual frequency GPS receivers observation ambiguities by using different model pseudoranges and carrier phases. Linear models of measured pseudoranges and carrier phases are described in the article. The components of vectors in the models are correlated. This correlation is caused by the influence of systematic errors in the observations results. The covariance matrix for linear models of pseudoranges and carrier phases is developed. It is that covariance components of vectors of linear combinations of pseudoranges and carrier phases are to be taken into account for processing and adjusting GPS observations.