EM.CUBE's PhysicalOptics.module is a 3-D asymptotic simulator for modeling of electromagnetic scattering from metal structures. An alternative to the more time consuming full-wave simulators like FDTD and MoM, the Physical Optics (PO) technique provides faster computational speed when simulating scattering of plane waves from large metallic surfaces or radiation of antennas in the presence of large metallic scatterers.

EM.CUBE's PhysicalOptics.module features a powerful iterative PO simulation engine that can handle multiple shadowing and multi-bounce reflections over concave surfaces with phenomenal speed. Beside conventional excitation sources, you can fly in distributed Huygens surface sources generated in the other modules for simulation of coupling and platform interaction effects.

FEATURES

 

STRUCTURE DEFINITION

• Metal solids and surfaces in free space
• Import STL CAD files as native polymesh structures
• Define global half-space lossy dielectric ground

SOURCES

• Short dipoles
• Import previously generated wire mesh solution as collection of short dipoles
• Plane wave excitation with linear and circular polarizations
• Multi-Ray excitation capability (ray data imported from Propagation Module or external files)
• Huygens sources imported from PO or other modules with abritrary rotation and array configuration

MESH GENERATION

• Regular or structured surface triangular wire-frame mesh
• Local mesh editing of polymesh objects

3-D PO SIMULATION

• Physical Optics solution of metal scatterers
• Iterative PO for fast simulation of multiple shadowing effects and multi-bounce reflections
• Calculation of near fields, far fields and scattering cross section (bi-static and mono-static RCS)
• Physical Optics solution in the presence of a lossy ground using Sommerfeld Green's functions
• Frequency and angular sweeps with data animation
• Parametric sweep with variable object properties or source parameters
• Multi-variable and multi-goal optimization of structure
• Remote simulation capability
• Both Windows and Linux versions of PO simulation engine available

DATA VISUALIZATION

• Current distributions on metallic surfaces
• Near field intensity plots (vectorial - amplitude & phase)
• Huygens surface data generation for use in PO or other EM.CUBE modules
• Far field radiation patterns: 3-D pattern visualization and 2-D Cartesian and polar graphs
• Bi-static and mono-static radar cross section: 3-D visualization and 2-D graphs
• Custom output paraemeters defined as mathematical expressions of standard outputs