空军预警学院学报2015，Vol.29Issue(5)：322-327,6.DOI:10.3969/j.issn.2095-5839.2015.05.003
直升机旋翼叶片回波建模与特性分析
Modeling of helicopter rotor blades'echoes and its characteristic analysis
摘要
Abstract
To improve the capability of helicopters identifying the targets with the micro-motion features, this article studies comprehensively the micro-motion characteristics of helicopters'rotor blades. Firstly, based on the facts that all the scattering points would produce the echoes, it establishes the integral math model for those scattering points of echoes, based on which, next, it analyzes the echoes'scintillation and its cause in time domain and frequency domain, and finally, it carries on the theoretical analysis and performs the simulation experiments on the parity of blades'number, the initial rotation angle, the rotor revolving speed parameters and the relationship between the scintillation and micro-Doppler characteristics of echoes. Simulation results show that the integral model of scattering points coincides with the scintillation of target better, compared to the rectangular slab model, and makes for extracting the micro-Doppler characteristics, thus offering a theoretical basis for further identifying the targets of helicopter class.关键词
微多普勒/直升机旋翼叶片/散射点/闪烁现象/目标识别Key words
micro-Doppler/helicopter rotor blades/scattering points/scintillation/target recognition分类
电子信息工程引用本文复制引用
陈永彬,李少东,陈文峰,杨军..直升机旋翼叶片回波建模与特性分析[J].空军预警学院学报,2015,29(5):322-327,6.
