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- Title
RADAR CROSS SECTION REDUCTION OF A CAVITY IN THE GROUND PLANE: TE POLARIZATION.
- Authors
GANG BAO; JUN LAI
- Abstract
The reduction of backscatter radar cross section(RCS) in TE polarization for a rectangular cavity embedded in the ground plane is investigated in this paper. It is established by placing a thin, multilayered radar absorbing material(RAM) with possibly different permittivities at the bottom of the cavity. A minimization problem with respect to the backscatter RCS is formulated to determine the synthesis of RAM. The underlying scattered field is governed by a generalized Helmholtz equation with transparent boundary condition. The gradient with respect to the material permittivity is derived by the adjoint state method. A fast solver for the Helmholtz equation is presented for the optimization scheme. Numerical examples are presented to show the efficiency of the algorithm for RCS reduction.
- Subjects
SIGNAL processing; RADAR cross sections; RADAR research; REMOTE sensing; ELECTRONIC systems
- Publication
Discrete & Continuous Dynamical Systems - Series S, 2015, Vol 8, Issue 3, p419
- ISSN
1937-1632
- Publication type
Article
- DOI
10.3934/dcdss.2015.8.419