半空间电大导体目标散射的高频分析方法
doi: 10.3724/SP.J.1146.2008.00038
High-Frequency Analysis on Scattering from Conductive Targets with Electrically Large Size in Half Space
-
摘要: 该文研究了半空间电大尺寸导体目标散射的高频求解方法。将半空间并矢格林函数引入物理光学方法中，对半空间环境影响进行考虑，推导出半空间物理光学分析方法，并结合图形电磁学(GRECO)，对半空间电大导体目标进行消隐判断，提取像素面元法矢量和深度缓存等有效信息，快速有效地计算了半空间导体目标的雷达散射截面(RCS)，数值结果证明该文方法的有效性和准确性。Abstract: The high-frequency method for solving the scattering of electrically large conductive targets in half space is presented in this paper. Consider the environmental impact of half-space, the half-space physical optics integral equation is deduced by introducing the half-space Greens function into the Physical Optics (PO) method. Combined with the GRaphical-Electromagnetic COmputing (GRECO) method, the shadow regions are eliminated quickly and the geometry information is attained by reading the color and depths of each pixel. The Radar Cross Section (RCS) of conductive targets can be exactly calculated in half space. The numerical results show that this method is efficient and accurate.
-
Yousee N. Radar cross section of complex targets[J].Proc.IEEE.1989, 77(5):722-734[2]Chauviere C, Hesthaven J S, and Wilcox L C. Efficientcomputation of RCS from scatterers of uncertain shapes[J].IEEE Trans. on Antennas and Propagation.2007, 55(5):1437-1448[3]Rius J M, Ferrando M, and Jofre L. High-frequency RCS ofcomplex radar targets in real-time[J].IEEE Antennas andPropagation.1993, 41(9):1308-1319[4]Han D H and Polycarpou A C. Ground effects for VHF/HFantennas on helicopter air frames[J].IEEE Trans. on Antennasand Propagation.2001, 49(3):402-412[5]李清亮, 葛德彪, 等. 求解目标地波散射特性的方法研究.微波学报, 1998, 14(3): 23-28.[6]Liu Z, He J, Xie Y, Sullivan A, and Carin L. Multilevel fastmultipole algorithm for ceneral targets on a half spaceinterface[J].IEEE Trans. on Antennas and Propagation.2002,50(12):1838-1849[7]Michalski K A and Zheng D. Electromagnetic scattering andradiation by surfaces of arbitrary shape in layered media,part I: Theory[J].IEEE Trans. on Antennas and Propagation.1990, 38(3):335-344[8]Yang J J, Chow Y L, and Fang D G. Fast solution ofmixed-potential time-domain integral equations forhalf-space environments[J].IEEE Trans. on Geoscience andRemote Sensing.2005, 43(2):269-279[9]Acar R C and Dural G. Complete set of closed-form Green'sfunctions for cylindrically layered media. IEEE Antennas andPropagation Society International Symposium, Atlanta GA,2006: 2863-2866.[10]阮颖铮. 雷达截面与隐身技术. 北京: 国防工业出版社, 1998:47-50. -
计量
- 文章访问数: 3039
- HTML全文浏览量: 71
- PDF下载量: 813
- 被引次数: 0
下载:
