Data weighting and solution assessment in combination

A data weighting method for combining different geodetic data based on stat istical tests of the residuals is discussed. By requiring the residuals of combination solution to be white Gaussian as a sample of random noise, the relative weight factors can be determined internally, independent of extern al comparisons. To achieve this goal and to assess the solution, the Pearso n chi(2) and higher-order moments of residuals are used to measure quantita tively the discrepancies between the residuals and white Gaussian noise.