高性能频选天线罩构件制造中的性能影响规律研究

High performance frequency selective radomes are the key components of high-end equipment in the field of aerospace, electronic information engineering and national defence industry. Structures and manufacturing techniques of these components are extremely complex. As a result, manufacturing errors and defects occur frequently. Because of the absence of influence law on performance, it is difficult to realize the high performance manufacturing of these components. So that, researches on the influence law of electrical property affected by manufacturing error and defect should be carried out to improve the performance of frequency selective radomes. Different methods , such as: theoretical modeling, numerical simulation and verification experiment are combined to solve this problem. In order to obtain the influence law on performance, researches should be done in the following aspects. First, establishing the multiple dimensions and scales parametric model of component , which contains manufacturing errors and defects. Second , numerical simulation algorithm for electrical property of radomes with multilayer hetero-structure. What we have done can support the high performance manufacturing of frequency selective composite radomes. It is of great importance to improve the manufacturing level of frequency selective composite radome components and promote the research and development of high-end equipment in the field of aerospace and national defence industry .

高性能频选天线罩是航空航天、电子信息以及国防工业等领域高端装备的关键构件，该类构件结构与制造工艺复杂，极易出现制造误差与缺陷；由于缺乏对制造中的性能影响规律的掌握，目前无法保证该类构件的高性能加工。为此，本项目以提高频选天线罩构件的性能为总体目标，探究该类构件制造误差与缺陷对电性能的影响规律。采用理论建模、数值仿真以及实验验证相结合的研究方法，建立包含制造误差与缺陷的高性能频选天线罩构件多维多尺度参数化表述模型，研究多层异质结构天线罩电性能数值分析算法，进而揭示制造误差与缺陷对构件电性能的影响规律，为频选天线罩的高性能制造提供理论依据和技术支持，切实提高我国高性能频选天线罩构件的制造水平，进而推动我国航空航天及国防领域高端装备的研制进程。

高性能频选天线罩是航空航天、电子信息及国防工业等领域高端装备的关键构件，该类构件制造过程中极易产生制造误差与缺陷，是影响其电性能的主要因素。由于缺少该类构件制造过程中性能影响规律，尚无法实现该类构件的高性能制造。因此，研究频选天线罩构件制造过程中性能影响规律就显得十分重要。本项目的主要研究内容为：含制造误差与缺陷的频选天线罩构件几何模型、频选天线罩电性能分析算法、频选天线罩电性能对制造误差与缺陷敏度分析、性能影响规律的实验验证。取得的主要研究成果为：1、研究了制造误差与缺陷的随机分布模型和制造误差边界重构方法，实现了制造误差与缺陷的参数化表征。2、提出了考虑制造误差的频率选择功能形面透波特性分析的改进时域有限差分算法，解决了频率选择功能形面电磁分析难题；3、提出了频选天线罩罩壁结构优化设计方法，突破了大入射角度下透波特性畸变问题；4、提出了改进的平面波谱-表面积分法，实现了频选天线罩构件电性能的精确分析；5、针对典型频选天线罩构件，分析了电性能对典型制造误差与缺陷的敏度关系，为频选天线罩构件优化提供基础；6、提出考虑制造误差与缺陷的频选天线罩构件结构优化策略，为频选天线罩的精准化设计提供了解决方案。项目研究成果将为频选天线罩的高性能制造提供理论基础与技术支撑。