摘要
论文提出一种基于该进型EMD(经验模态分解)的一维雷达距离像信号的分析方法。首先提出了一种不受插值函数影响的EMD,相对于传统的EMD具有更加稳定的时频特性。然后,应用该方法对几组雷达数据进行时频分析,结合一维雷达距离像的特点,提出了平均瞬时频率和Hilbert-Huang时频谱结合应用的理论,并进行了性能分析。
An analysis algorithm based on improved EMD is proposed in this paper. At first,an improved EMD approach is derived,which gets rid of the existing problems of traditional EMD and has more solid performance in time-frequency analysis.Secondly,a few data are analyzed using this method and some useful conclusions are obtained for the future work. Based on the characteristics of range profile of one-dimensional radar, the theory of combining average instantaneous frequency with Hilbert-Huang time-frequency spectrum is proposed, and the performance analysis is carried out.
作者
程占昕
王艳娜
CHENG Zhanxin;WANG Yanna(Department of Information Systems,Dalian Navy Academy,Dalian 116018;No. 92677 Troops of PLA,Dalian 116018)
出处
《舰船电子工程》
2019年第7期29-31,36,共4页
Ship Electronic Engineering
