Local Quasigeoid Modelling Using Gravity Data Inversion Technique - Analysis of Fixed Coefficients of Density Model Weighting Matrix

The paper presents analysis relating to the method of local quasigeoid modelling based on the geophysical technique of gravity data inversion, using non-reduced surface gravity data and GNSS/levelling height anomalies. One of the main problems occurring in the application of the method is to determine the model weighting matrix, the purpose of which is to control the inversion process. This paper presents the analyses concerning the determination of certain constant coefficients signed as   ,   and  , appearing in the definition of the model weighting matrix. The calculations performed indicate that because of the accuracy of the density model, the coefficient  should be in the range of 01 . 0 001 . 0    , and the range 005 . 0 0025 . 0    should be adopted as the optimal. As the optimal values of the coefficients   and   , values 1 . 0    and 01 . 0    , for the zones of constant density with area less than about 130 2 km were determined.