Comparison of different methods to correct the matrix of geometrical angular radiation coefficients

Abstract

Different methods for correcting the matrix of geometrical angular radiation coefficients deter-mined using approximate methods and therefore not satisfying the properties of closability and reciprocity are considered. It is revealed that, for a matrix with a large number of zero elements, neither the method of fixed consecutive correction nor the method based on using undetermined Lagrangian multipliers make it possible to obtain a physically plausible matrix with ideal abovementioned properties. The method of selective correction proposed in this study did not yield an acceptable result either. An acceptable error was obtained only with the help of a two-staged procedure, namely selective correction using the Lagrangian multiplier with the subsequent fixed correction of the matrix.