一种机载雷达孔径天线罩多层曲面频选工艺对位设计方法

By optimizing the frequency selection cell period through deep learning models and partitioning expansion algorithms, and combined with the positioning hole design, the precise alignment of the multi-layer curved surface of the airborne radar aperture radome was achieved, solving the gap problem caused by the difference in curvature of the curved surface and improving electromagnetic stealth and radiation performance.

CN122133528BActive Publication Date: 2026-07-17CHENGDU XINGSHUI TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHENGDU XINGSHUI TECH CO LTD
Filing Date
2026-05-06
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In the existing technology, the multi-layer curved surface frequency-selective structure of the airborne radar aperture radome has alignment gaps due to the difference in curvature of the surface during installation, making it difficult to balance electromagnetic stealth and radiation performance.

Method used

A dual-axis periodic adaptive adjustment strategy based on a deep learning model is adopted, combined with a partitioning unfolding algorithm with area loss compensation and an array-type positioning hole design, to precisely adjust the period of the frequency selection unit, generate the optimal frequency selection array pattern, and achieve precise laying through the cooperation of positioning holes and positioning pins.

Benefits of technology

It effectively eliminates the alignment gaps in the multi-layer curved surface frequency-selective structure, improves the process alignment accuracy and processing quality, and ensures a balance between electromagnetic stealth and radiation performance.

✦ Generated by Eureka AI based on patent content.

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Abstract

本发明公开了一种机载雷达孔径天线罩多层曲面频选工艺对位设计方法,涉及天线罩技术领域,先构建包含上下层频选曲面的双曲率多层曲面模型,定义X轴为横向弧度方向、Y轴为纵向弧度方向;基于频选可加工尺寸先验数据在曲面上生成阵列式定位孔;采用带面积损失补偿的分区展开算法将曲面展开为二维平面,核定面积损失率≤1.5‰;提取曲率最大的上下层对应曲面定位孔的双轴间距差,在安全阈值内通过双轴周期自适应调整策略耦合调整频选单元周期,经预训练深度学习模型仿真验证与自动修正得到最优参数并生成频选阵列图案;最后映射得到平面频选膜加工图案。本发明可消除多层曲面频选结构对位缝隙,兼顾隐身与辐射性能,显著提高工艺适配性与加工质量。
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