An Improved MM-PO Method with UV Technique for Scattering from an Electrically Large Ship on a Rough Sea Surface at Low Grazing Angle

作者：He, S Y^*; Li, C; Zhang, F; Zhu, G Q; Hu, W D; Yu, W X

来源：Applied Computational Electromagnetics Society Journal, 2011, 26(2): 87-95.

• LGA
• MM-PO hybrid method
• target/rough surface scattering
• UV

An improved MM-PO-UV hybrid method is developed to calculate the bistatic scattering from the two-dimensional (2-D) composite model of an electrically large ship (ELS) on a one-dimensional (1-D) rough sea surface at a low gazing angle (LGA). The subdivision of the MM and PO region is performed flexibly according to the physical considerations. The MM region contains not only the ship but also a small portion of the neighboring sea region where the surface currents need to be modeled accurately. An iterative solution BiCGSTAB is adopted to solve the final matrix equation of a large dimension caused by the ELS. Then, a UV matrix decomposition technique is applied as the fast algorithm to accelerate the matrix-vector productions and the matrix elements filling in. The improved method makes it possible for the Monte-Carlo simulation of large-scale complex target/rough surface problems under an LGA. The accuracy is validated in comparison with the traditional MOM method.

• 出版日期2011-2
• 单位中国人民解放军国防科学技术大学; 上海交通大学; 武汉大学