DUCTSCAT

 
 

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DUCTSCAT

DUCTSCAT

DUCTSCAT is a computer code designed for evaluating the radar cross section of duct geometries with optional material treatments.

DUCTSTAT (Duct Scattering) is a computer code designed for evaluating the radar cross section performance of duct geometries with optional material treatments at high frequencies. DUCTSCAT has been used to perform radar cross section signature analysis on various aircrafts, ships that have duct shaped geometries.


Applications

The code computes the radar cross section for two orthogonal polarizations of the incident field. In the computation, only the contributions from fields that are scattered from the duct interior are considered. If the user wants to include other phenomena, such as edge diffraction effects from the duct inlet aperture, these must be modeled using another appropriately designed code. The duct may have arbitrary shape, as it is described by a collection of flat triangular facets. Complex ducts, with multiple entrance and/or exit apertures, such as a Y-shaped duct, are easily modeled.

DUCTSCAT also allows the user to model a perfect exit aperture. These surfaces will be referred to as termination surface(s). Ray bundles that hit these surfaces are terminated without any contribution to the radar cross section. Such surfaces may be used to model ducts with an aperture that is shadowed from, or for some other reason, not visible to the illuminating threat radar. These surfaces can also be used to model an aperture of an ideally treated cavity.

Material treatments are supported using amplitude reflectivity tables. A duct may be divided into several disjoint surfaces, each of which may have a different material treatment. Each material type is described in terms of its frequency and incident angle dependent reflectivity. DUCTSCAT automatically interpolates between angle entries in the material tables as it performs the ray bounce calculations.


Features

  • Computation of two orthogonal polarizations
  • Contributions only from duct interior
  • Arbitrary shape
  • Complex Y-shaped ducts with multiple entrance and/or exit apertures
  • Perfect exit aperture
  • Material treatments
  • Material type in terms of frequency and incident angle dependent reflectivity
  • Automatic interpolation between angle entries

Benefits

  • DUCTSCAT predicts radar signature for arbitrary and complex ducts with optional material treatments. The material type is described in terms of its frequency and incident angle reflectivity.
  • DUCTSCAT automatically interpolates between angle entries in the material tables as it performs the ray bounce calculations.

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