现代雷达2024，Vol.46Issue(7)：23-29,7.DOI:10.16592/j.cnki.1004-7859.2024.07.003
旋翼无人机与直升机二次曲面散射中心提取与重建方法
Simulation and Reconstruction of Scattering Center Extraction for Rotary-wing Drone and Helicopter with Quadratic Surface Subdivision
摘要
Abstract
In this paper,the fast physical optics(FPO)method is employed to simulate the scattering field of a quadratic surface subdivision for rotor UAV targets.The FPO method considers the physical mechanism of the target and allows for electrically large-scale proportional subdivision.To address the ill-posed problem in ASC parameter estimation while reducing computation time and accuracy errors,a sparse method that combines orthogonal matching pursuit(OMP)with success history-based param-eter adaptive differential evolution(SHADE)is proposed.Numerical examples demonstrate that our proposed method can effec-tively and accurately extract scattering centers of complex targets,resulting in a reduction of 2～3 bits in patch numbers at the 10 GHz band.According to the scattering center extraction results,it is concluded that the small scattering centers of the rotor UAV are centrosymmetric around the central scattering center,while the scattering centers of the helicopter are approximately parallel,which provides a reliable simulation basis and theoretical basis for the accurate identification and automatic detection of low and slow small targets by using the electromagnetic scattering characteristics of radar targets.关键词
旋翼无人机/快速物理光学法/散射中心/雷达散射截面/特征提取Key words
rotary wing drone/fast physical optics/scattering center/radar cross section/feature extraction分类
信息技术与安全科学引用本文复制引用
郭增鸿,陈小龙,吴语茂,关键,薛永华..旋翼无人机与直升机二次曲面散射中心提取与重建方法[J].现代雷达,2024,46(7):23-29,7.基金项目
国家自然科学基金资助项目(62222120) （62222120）
山东省自然科学基金资助项目(ZR2021YQ43) （ZR2021YQ43）
