RCS Convergence Study on Electrically Large Corner Reflector in WIPL-D Software

An electrically large corner reflector is well-known structure used in numerous applications where emulation of a large Radar Cross Section (RCS) is required from a reasonably sized object. In this application note we present the analysis of an electrically large corner reflector to illustrate the process of simulation results convergence study in WIPL-D software. By following the changes in RCS related to PEC corner reflector from several, carefully selected simulations, the convergence can be established and high reliability of the calculated results confirmed. The simulations differ in some kernel parameters settings which are thoughtfully explained in the text. The changes in reflector RCS obtained after the simulations can be easily compared for the sake of convergence analysis using WIPL Graph module in polar or Cartesian coordinate systems.

WIPL-D Pro CAD and WIPL-D Pro are used for modelling and simulations. It will be shown that WIPL-D Software, a full wave 3D EM Method-of-Moments (MoM) based solver, applying Surface Integral Equations (SIEs) and Higher Order Basis Functions (HOBFs) can be used effectively to simulate the corner reflector scenario in reasonable time using more or less standard computer workstation configuration. The models will be simulated at 10 GHz – a frequency which is important for some military radars.

Section: RCS/Scattering

For full version of the document, please check the following pdf.