Reconstruction of equivalent currents using a near-field data transformation - with radome applications

Knowledge of the current distribution on a radome can be used to improve radome design, detect manufacturing errors, and to verify numerical simulations. In this paper, the transformation from near-field data to its equivalent current distribution on a surface, ie the radome, is analyzed. The transformation is based on the surface integral representation that relates the equivalent currents to the near-field data. The full vector formulation is used in the analyzis but the numerical results are limited to the scalar approximation. It is shown that defects on the radome, not localized in the measured near field, are focused and detectable on the radome surface. (Less)