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Radar Cross Section

Radar Cross Section

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Radar cross section (RCS) is a measure of the electromagnetic energy intercepted and reradiated at the same wavelength by any object. The dimensions are those of an area, usually square meters (m2) or decibels relative to a square meter (dBsm). The relationship between square meters and dBsm. The RCS of an object is a complex combination of multiple factors: size, shape, material, edges, wavelength, and polarization. Simple objects tend to have a single, or few, scattering sources. Complex objects (such as airplanes) tend to have multiple scattering sources (e.g., nose, fuselage, inlet, wing root, wing, and so forth). Thus, for complex objects, the RCS is the complex (amplitude and phase) combination of contributions from each scattering source.

Chapter Contents:

  • 4.1 RCS of a Sphere
  • 4.2 RCS of Simple Objects
  • 4.3 Polarization
  • 4.4 Chaff Characteristics
  • 4.5 Diffuse Targets and Clutter
  • 4.6 Radar Signatures
  • 4.7 Exercises
  • 4.8 References

Inspec keywords: electromagnetic wave scattering; radar cross-sections; electromagnetic wave polarisation

Other keywords: radar cross section; RCS; polarization factor; scattering sources; electromagnetic energy measure; size factor; edge factor; wavelength factor; shape factor; complex combination; material factor

Subjects: Radar equipment, systems and applications; Electromagnetic wave propagation

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