渐变微波吸收体散射截面计算  

Computation of RCS of various microwave absorber

作　　者：潘顺康[1] 吕善伟[1] 冯克明 王伟 

机构地区：[1]北京航空航天大学电子信息工程学院 [2]北京无线电计量测试研究所,北京100854

出　　处：《系统工程与电子技术》2006年第10期1502-1505,共4页Systems Engineering and Electronics

基　　金：国家自然科学基金资助课题(60271012)

摘　　要：针对二维周期渐变微波吸收体尺寸大、结构较复杂、锥齿间耦合强,很难直接精确计算出雷达散射截面(RCS)的问题,采用矩量法和天线阵分析技术相结合的方法对渐变吸收体进行分析和计算,解决了计算量大、锥齿间耦合强而难以计算的难题,且能保证计算的精度。在线极化平面波入射情况下,给出单个和两个涂敷二面角的散射截面以及多个渐变吸收体的散射截面,计算结果与商用软件HFSS(high-frequency structure simulator)计算得到的结果基本吻合,计算速度明显快于HFSS,且克服了因吸收体大而无法用HFSS计算的难题,结果表明所提方法在工程运用上是可行的。Due to the large size and the difficult structure and the coupling of cones, it is hard to directly compute the radar cross seetion（RCS） of various absorber of two-dimension periodic. Various absorber is analyzed and computed by combination of the moments method and technology of antenna array, which can both ensure the precision of calculation and solve the difficult problem of large computation and coupling. Related mathematics formula is deducted. On the condition of incidence of linear polarized plane wave, the example of calculation RCS of single and double dihedrals and the multi-absorber is illustrated. The result is consistent with the one computed by using software HFSS（high-frequeney structure simulator）,and the time taken to compute is much less. Some difficult problems unsolved by HFSS have been solved. The method used is feasible to engineering.

关 键 词：电磁计算 雷达散射截面 二面角反射器 矩量法 

分 类 号：TN959[电子电信—信号与信息处理]