A variance-components analysis for the longitude-network adjustment

Abstract

The problem of weights in the task of longitude-network adjustment has not been solved yet because the structure of the observational variances is unknown. During the adjustment of a part of the European Longitude Network in the framework of the project of including Belgrade in this network, new models of determining the components of observational variances were analyzed. These models offer a better description of the variance structure so that the weights are closer to their true values than those used up to now.