摘要
对弹道目标进行时频分析可以推测并估计弹道目标的微动运动形式,并可以进一步用于微动参数估计。本文提出了一种基于正交匹配追踪(OMP)的弹道目标微动时频分析方法。该方法通过选取逆傅里叶基,并通过贪婪算法进行稀疏求解,从而得到弹道目标回波信号每一时刻的频率分量。该方法相比于传统短时傅里叶变换进行时频分析的方法具有提取频率更加精细,且可用于间断数据的优点。本文采用实测数据对文中提出的方法进行了对比验证,结果表明该方法的有效性。
The time-frequency analysis of ballistic target can infer the micro motion form of the ballistic target.In this paper a time-frequency analysis method of ballistic target based on OMP is proposed.By selecting the inverse Fourier basis set and using sparse solution by greedy algorithm,the frequency component of ballistic target signal at each time is obtained.Compared with the traditional time-frequency analysis method based on short-time Fourier transform,this method has the advantages of frequency extraction accuracy and can be used for discontinuous signal.Real application data was used to verify the proposed method,and the results indicated the efficiency of this method.
作者
邓盛
姜雪松
DENG Sheng;JIANG Xuesong(No.38 Research Institute of CETC,Hefei Anhui 230088;Key Laboratory of Aperture Array and Space Application,Hefei Anhui 230088)
出处
《软件》
2021年第6期77-80,共4页
Software
