国防科技大学学报2023，Vol.45Issue(6)：10-19,10.DOI:10.11887/j.cn.202306002
面向飞行器电磁散射特征诊断的近场频域成像算法
Near-field frequency domain imaging algorithm about the aircraft's scattering characteristics diagnosis
摘要
Abstract
The flexibility of UAV in structural style and material composition makes it have more space for stealth performance optimization than the manned aircraft,so it was urgent to carry out near-field imaging indoors or outdoors.Based on the imaging geometry model of aircraft turntable,a general signal model of near-field turntable imaging was established,and a near-field frequency-domain imaging algorithm for aircraft electromagnetic scattering feature diagnosis was proposed.Under the constraint of sub aperture imaging setting,the slant plane spectrum was approximately processed as the horizontal plane spectrum;the applicable conditions of the algorithm was analyzed,and simulation data around typical near-field imaging geometry and aircraft size was generated.The completes near-field imaging in the range of 0.6～35 GHz was performed.Good imaging results confirm the correctness of the theoretical analysis and the proposed algorithm.关键词
飞行器/近场成像/SAR成像/转台模型Key words
aircraft/near-field imaging/synthetic aperture radar imaging/rotating model分类
信息技术与安全科学引用本文复制引用
贾高伟,阴鹏,邵帅..面向飞行器电磁散射特征诊断的近场频域成像算法[J].国防科技大学学报,2023,45(6):10-19,10.基金项目
国家自然科学基金资助项目(61801495) （61801495）
湖南省科技创新计划资助项目(2021RC3077) （2021RC3077）
