基于区间分析的非对称外形天线罩厚度设计  

Thickness Design of Radome with Asymmetric Shape Using Interval Analysis

作　　者：赵文忠 许万业[2,3] 李健伟 周金柱[2,3] ZHAO Wenzhong;XU Wanye;LI Jianwei;ZHOU Jinzhu(The 20th Research Institute of CETC,Xi’an 710068,China;Key Laboratory of Electronic Equipment Structure Design,Ministry of Education,Xidian University,Xi’an 710071,China;Shanxi Key Laboratory of Space Solar Power Station System,Xidian University,Xi’an 710071,China)

机构地区：[1]中国电子科技集团公司第二十研究所,陕西西安710068 [2]西安电子科技大学电子装备结构设计教育部重点实验室,陕西西安710071 [3]西安电子科技大学陕西省空间太阳能电站系统重点实验室,陕西西安710071

出　　处：《电子机械工程》2021年第2期1-4,16,共5页Electro-Mechanical Engineering

基　　金：国家自然科学基金资助项目(51775405);国防科研项目(TDGC-CL-19-052-2);陕西省自然基金资助项目(2019JM-010)。

摘　　要：厚度误差是影响天线罩电性能的重要因素。对于非对称外形天线罩,厚度误差引入的电性能恶化程度会随天线扫描角变化。针对该问题,文中提出了一种基于区间分析的天线罩厚度设计方法。首先根据误差区间分析天线罩的方向图区间,从中提取电性能指标区间,进而分析不同扫描角下电性能指标区间随厚度的变化特性。通过对电性能指标及其变化区间作单一目标函数转化,给出不同扫描角下天线罩电性能指标及其变化区间最优的厚度设计结果。某正切卵形天线罩的仿真结果验证了该方法的有效性。Thickness error is an important factor affecting the electromagnetic(EM)performance of radome.For the radome with asymmetric shape,the EM performance degradations caused by thickness errors vary with antenna scan angle.Aiming at this problem,a radome thickness design method based on interval analysis is proposed in this paper.First,the radome power pattern interval is analyzed according to the interval of errors,from which the EM performance intervals are obtained.Then,the variation of EM performance intervals with thickness under different scan angles are analyzed.Through transforming the EM performance and its variation intervals into a single objective function,the thickness is selected to yield the optimal EM performance and its variation intervals under different scan angles.Simulation results of a tangent ogive radome validate the effectiveness of the proposed method.

关 键 词：天线罩 非对称 电性能 区间分析 厚度设计 

分 类 号：TN82[电子电信—信息与通信工程]