覆盖蜂窝吸波结构的有限大目标RCS计算与优化  

RCS calculation and optimization of limited size object coated with honeycomb absorbing structure

作　　者：赵雨辰[1] 刘江凡[1] 宋忠国[1] 席晓莉[1] 

机构地区：[1]西安理工大学自动化与信息工程学院,陕西西安710048

出　　处：《西安理工大学学报》2016年第2期169-172,共4页Journal of Xi'an University of Technology

基　　金：国家自然科学基金资助项目(61501369);中国博士后科学基金资助项目(2016M592904XB);西安理工大学科技创新计划资助项目(2014CX008);西安理工大学博士科研启动基金资助项目(105-211423)

摘　　要：使用等效电磁参数可以提高覆盖蜂窝吸波结构的有限大目标雷达散射截面积(RCS)计算与优化效率,但传统等效电磁参数计算方法精度不足。因此,本文采用了具有色散特性的闭式表达式来提高宽频带内蜂窝吸波结构等效电磁参数的计算精度,将所得到的精度更高的等效电磁参数与高频算法相结合,计算并优化了覆盖蜂窝吸波结构的有限大目标的RCS。结果表明:一方面具有色散特性的闭式表达式能够更好地反映蜂窝吸波结构等效电磁参数随频率的变化情况,另一方面采用高精度等效电磁参数结合高频算法的方法在保证效率的同时,进一步提高覆盖蜂窝吸波结构的有限大目标的RCS计算和优化的精度。The usage of effective electromagnetic parameters can greatly accelerate the calculation of radar cross section （RCS） of limited size object coated with honeycomb absorbing structure. However, the traditional predictive methods are still not accurate in the calculation of the effec- tive electromagnetic parameters of honeycomb absorbing structure. Hence, we adopt a dispersive closed-form expression, which is capable of conveying the dispersive characteristics of effective e- lectromagnetic parameters of honeycomb radar absorbing structure. Then, we combine this dis persive expression with high frequency method to calculate and optimize the RCS of limited size target coated with honeycomb absorbing structure. Results show that this calculation method can be used to improve the computation accuracy of the RCS of a limited size target coated with hon eycomb absorbing structure without sacrificing the efficiency of calculation and optimization.

关 键 词：蜂窝吸波结构 有限大目标 等效电磁参数 雷达散射截面积 

分 类 号：TN973.2[电子电信—信号与信息处理]