Efficient computation of radar scattering modulation from jet engines


  • Daniel C. Ross,

  • John L. Volakis,

  • Hristos T. Anastassiu


By making use of the overlapping symmetries between the modal inlet fields and the engine face, it is found that the radar modulation due to a set of rotating blades can be computed using only one solution for any blade position. Frequency domain solutions for the stationary engine face can immediately produce modulation data with a simple postprocessing step. The validity of the modulation scheme is demonstrated with the aid of a simplified engine model possessing a semianalytical mode-matching solution.