Regularization techniques for reconstruction of antenna radiated field by near field measurements

The problem of reconstructing of the direction characteristic of antenna system is formulated as a system of the functional equations of the I kind in strict electrodynamic principles. Result of solving this system determines distribution of currents of antenna system and provides the calculation of asymptotic submission of the direction characteristic in a distant zone. Thus, radiation field of antenna system is defined with taking into account the influence of construction elements (reflector) and mutual coupling of radiators. The method of the numerical decision of equation system on a limited set of measurement results of the amplitude-phase field distribution in a short-range zone is offered. Effective interpolation diagrams are offered for coincidence of dimensionalities of defined distributions of currents and results of measurements. Application of iterative regularizating procedureallows to receive the stable results for ill-posed problem with an acceptable accuracyin the presence of random errors of measurements.