电波科学学报2024，Vol.39Issue(3)：442-454,13.DOI:10.12265/j.cjors.2023173
飞行器典型结构雷达成像诊断与分析
Radar imaging diagnosis and analysis of typical structure on aircraft
摘要
Abstract
Stealth aircraft are gradually favored by various countries.Evaluating the stealth ability of the targets and identifying the direction for improving stealth performance is crucial in the aircraft stealth design work.As for the high-frequency radar,the scattering characteristics of aircraft targets exhibit"sparsity",and the scattering field follows the principle of locality.The scattering distribution of the target presents as a series of discrete isolated scattering centers.Given the advantages of high resolution and the ability to accurately reflect the spatial position of scattering points in inverse synthetic aperture radar(ISAR)images,this article analyzes the morphology of scattering points in ISAR images corresponding to different scattering mechanisms by using simulation methods.It establishes the correlation between typical geometry and imaging scattering points.The main scattering paths corresponding to six typical aircraft structures,including spheres,cylinders,prisms,cones,cylindrical cavities,and S-shaped cavities,are extracted.Strong scattering point diagnosis and evaluation based on radar imaging are carried out for two different types of stealth drones,and the conclusion is drawn that the main scattering sources of the two types of drones are concentrated in the intake duct.关键词
隐身飞行器/逆合成孔径雷达(ISAR)/雷达成像诊断/强散射源/散射路径Key words
stealth aircraft/inverse synthetic aperture radar/radar imaging diagnosis/strong scattering source/scattering path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,鲁亚飞..飞行器典型结构雷达成像诊断与分析[J].电波科学学报,2024,39(3):442-454,13.基金项目
国家自然科学基金(61801495) （61801495）
湖南省科技创新计划(2021RC3077) （2021RC3077）
