适用于裁剪NURBS曲面RCS预估的改进的物理光学法

doi:10.3969/j.issn.1001-2400.2010.05.021

Abstract

Abstract:

The invalidity of the stationary phase method (SPM) in the evaluation of the PO integral over trimmed surfaces is analyzed theoretically, on the basis of which the SPM-Gordon algorithm is presented to evaluate the PO integral over trimmed surfaces accurately and effectively. Compared with the conventional method in which numerical integrations are utilized, this new algorithm successfully avoids the complex and time-consuming numerical integrations and releases the heavy burden on the CPU. Numerical results indicate that when the area of the trim region is less than half of that of the effective region, the time consumed by the SPM-Gordon method is no more than 10 percent that by the conventional method in most cases.

Key words: trimmed NURBS surfaces, electromagnetic scattering, PO integral, SPM-Gordon algorithm, RCS

GUAN Ying;GONG Shu-xi;XU Yun-xue;ZHANG Shuai;JIANG Wen. Improved PO technique for the RCS computation of targets modeled with trimmed NURBS surfaces[J].J4, 2010, 37(5): 893-897.

References

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Improved PO technique for the RCS computation of targets modeled with trimmed NURBS surfaces

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