Academic
Publications
Hybrid PMM-MOM method for analyzing the RCS of finite array

Hybrid PMM-MOM method for analyzing the RCS of finite array,10.1109/ICIST.2011.5765306,Jianxun Su,Xiaowen Xu,Mang He

Hybrid PMM-MOM method for analyzing the RCS of finite array  
BibTex | RIS | RefWorks Download
In this paper, a hybrid method (hybrid PMM-MOM method) is presented for effectively and accurately analyzing the RCS of finite array. This method divides finite array into two parts. The inner part of an approximate infinite periodic structure is analyzed by periodic method of moment (PMM); the outer part is then analyzed by method of moments (MOM). The accuracy of new method is much better than that of the pure PMM, and is almost as same as that of pure MOM. As for the memory, because pure PMM uses the periodic conditions, it takes up much less memory resources. For hybrid PMM-MOM method, because the inner part is calculated by PMM, calculation work concentrated in outer part. Consequently, compared to the exact MOM, the new method saves much more memory resources and computation time. I. INTRODUCTION ybrid PMM-MOM (periodic MOM and exact MOM) method is proposed for analyzing the RCS of finite array. Surface waves are unique for finite periodic structures, which will not appear in infinite one, and the surface waves and Floquet currents in this case will interfere with each other, resulting in strong variations of the current amplitude(3). Therefore, if modeling finite periodic structures by PMM, it will cause significant errors or even lead to wrong results sometimes. The exact full-wave model is employed in the analysis of finite structures, including both planar and curved structures. However, the strict model takes up a great deal of memory, and computing time is also unacceptable, especially for large finite periodic structures. Therefore, a new method to save memory and to obtain sufficient accuracy is presented for the analysis of finite periodic structures. The new method divides the finite array into two parts. The inner part of an approximate periodic structure is analyzed by pure PMM, and the outer boundary part is analyzed by the exact full-wave model, i.e, MOM. The new method can obtain sufficient accuracy and save significant memory. For example, consider the radar cross section (RCS) of a planar array with 21 x 21 dipoles. The accuracy and efficiency of the three methods, including PMM, MOM and the new proposed hybrid PMM-MOM method, are analyzed. The new method is much more accurate than that of the pure PMM, and is almost as same as that of the exact MOM. As for memory, because PMM uses the periodic conditions, the new method takes up much less memory resources. Consequently, compared to the exact MOM, the new method saves much more memory resources and computation time. In fact, the proposed new method can be used to analyze arbitrary finite
Cumulative Annual
View Publication
The following links allow you to view full publications. These links are maintained by other sources not affiliated with Microsoft Academic Search.