Time-domain analysis of multiple scattering effects on the radar cross section (RCS) of objects in a random medium. (English) Zbl 1500.78001
The authors consider the scattering of a modulated signal from a large Dirichlet object in a discrete random medium. It is assumed that the object size and the surface radius of the curvature are both much greater than the wavelength at the carrier frequency. The extended Huygens-Fresnel principle and the 2nd order Rytov approximation for the incident field are used and the time-domain radar cross section (RCS) is found by taking the inverse Fourier transform of the two-frequency RCS. The formula of the time-domain RCS is reduced to the summation of the 2nd-order moments by assuming that both the incident and scattered fields are circular complex Gaussian random variables.
Reviewer: Vladimir Mityushev (Kraków)
MSC:
| 78A45 | Diffraction, scattering |
| 78A48 | Composite media; random media in optics and electromagnetic theory |
| 65D30 | Numerical integration |
Keywords:
time-domain radar cross section; two-frequency mutual coherence function; discrete random media shower curtain effects; Kirchhoff approximationReferences:
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