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

被引：0

作者：

Guan Y. ^{[1
]}

Gong S.-X. ^{[1
]}

Xu Y.-X. ^{[1
]}

Zhang S. ^{[1
]}

Jiang W. ^{[1
]}

机构：

[1] Key Lab. of Antennas and Microwave Technology, Xidian Univ.

来源：

Xi'an Dianzi Keji Daxue Xuebao/Journal of Xidian University | 2010年 / 37卷 / 05期

关键词：

Electromagnetic scattering; PO integral; RCS; SPM-Gordon algorithm; Trimmed NURBS surfaces;

D O I：

10.3969/j.issn.1001-2400.2010.05.021

中图分类号：

学科分类号：

摘要：

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.

引用

页码：893 / 897

页数：4

共 13 条

[11]

Zha F.T., Gong S.X., Xu Y.X., Et al., Fast shadowing technique for electrically large targets using Z-buffer, J of Electromagn Waves and Appl, 23, pp. 341-349, (2009)

[12]

Xu Y.X., Guan Y., Cha F.T., Et al., Analysis of shadowing processing technique based on modeling using NURBS, Progress In Electromagnetics Research, 89, pp. 325-338, (2009)

[13]

Gordon W.B., Far-field approximations to the Kirchhoff-Helmholtz representations of scattered fields, IEEE Trans on Antennas Propag, 23, 7, pp. 590-592, (1975)

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