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Volume 15, Issue 4
Radar Cross Section Reduction of a Cavity in the Ground Plane

Gang Bao & Jun Lai

Commun. Comput. Phys., 15 (2014), pp. 895-910.

Published online: 2014-04

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  • Abstract

This paper investigates the reduction of backscatter radar cross section (RCS) for a rectangular cavity embedded in the ground plane. The bottom of the cavity is coated by a thin, multilayered radar absorbing material (RAM) with possibly different permittivities. The objective is to minimize the backscatter RCS by the incidence of a plane wave over a single or a set of incident angles. By formulating the scattering problem as a Helmholtz equation with artificial boundary condition, the gradient with respect to the material permittivities is determined efficiently by the adjoint state method, which is integrated into a nonlinear optimization scheme. Numerical example shows the RCS may be significantly reduced.

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@Article{CiCP-15-895, author = {}, title = {Radar Cross Section Reduction of a Cavity in the Ground Plane}, journal = {Communications in Computational Physics}, year = {2014}, volume = {15}, number = {4}, pages = {895--910}, abstract = {

This paper investigates the reduction of backscatter radar cross section (RCS) for a rectangular cavity embedded in the ground plane. The bottom of the cavity is coated by a thin, multilayered radar absorbing material (RAM) with possibly different permittivities. The objective is to minimize the backscatter RCS by the incidence of a plane wave over a single or a set of incident angles. By formulating the scattering problem as a Helmholtz equation with artificial boundary condition, the gradient with respect to the material permittivities is determined efficiently by the adjoint state method, which is integrated into a nonlinear optimization scheme. Numerical example shows the RCS may be significantly reduced.

}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.090413.130913s}, url = {http://global-sci.org/intro/article_detail/cicp/7119.html} }
TY - JOUR T1 - Radar Cross Section Reduction of a Cavity in the Ground Plane JO - Communications in Computational Physics VL - 4 SP - 895 EP - 910 PY - 2014 DA - 2014/04 SN - 15 DO - http://doi.org/10.4208/cicp.090413.130913s UR - https://global-sci.org/intro/article_detail/cicp/7119.html KW - AB -

This paper investigates the reduction of backscatter radar cross section (RCS) for a rectangular cavity embedded in the ground plane. The bottom of the cavity is coated by a thin, multilayered radar absorbing material (RAM) with possibly different permittivities. The objective is to minimize the backscatter RCS by the incidence of a plane wave over a single or a set of incident angles. By formulating the scattering problem as a Helmholtz equation with artificial boundary condition, the gradient with respect to the material permittivities is determined efficiently by the adjoint state method, which is integrated into a nonlinear optimization scheme. Numerical example shows the RCS may be significantly reduced.

Gang Bao & Jun Lai. (2020). Radar Cross Section Reduction of a Cavity in the Ground Plane. Communications in Computational Physics. 15 (4). 895-910. doi:10.4208/cicp.090413.130913s
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