一种电大尺寸深腔散射的有效计算方法

doi:10.3969/j.issn.1001-2400.2012.01.026

Abstract

Abstract:

To reduce the too high requirements when the RCS of electrically large and deep cavity is computed, an effective method based on the Finite Element-Boundary Integration (FE-BI) technique is presented. By utilizing the unique features of the matrix elements and excited vectors when the FE-BI technique is utilized to compute the cavity scattering, and introducing the idea of generalized Gaussian elimination, we can divide the deep cavity into some layers along its depth and perform the calculation layer by layer. The required maximum memory is dependent only on the cavity cross section size and independent of its depth. By fully exploiting the characteristics of the presented method, the delivering scheme between adjoined layers and matrix operations can be optimized, and then the computational efficiency is improved significantly. Numerical results show that the presented method can realize the RCS computation of deep cavities fast and accurately.

Key words: deep cavity, RCS, finite element-boundary integration (FE-BI)

CLC Number:

TN820

ZHANG Hongxia;ZOU Yanlin;SU Donglin. Effective method for RCS computation of large and deep cavities[J].J4, 2012, 39(1): 146-150.

References

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Effective method for RCS computation of large and deep cavities

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