Improved HHT and its application in narrowband radar imaging for precession cone-shaped targets

作     者：Shen Zhao Jie Niu Xiang Li Chunjie Qiao 

作者机构：College of Mechatronics and Automation National University of Defense Technology Department of Missile Engineering Ordnance Engineering College College of Electronic Science and Engineering National University of Defense Technology 

出 版 物：《Journal of Systems Engineering and Electronics》 (系统工程与电子技术（英文版）)

年 卷 期：2014年第25卷第6期

页      面：977-986页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0810[工学-信息与通信工程] 080704[工学-流体机械及工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 081105[工学-导航、制导与控制] 0807[工学-动力工程及工程热物理] 081001[工学-通信与信息系统] 081002[工学-信号与信息处理] 0825[工学-航空宇航科学与技术] 0811[工学-控制科学与工程] 

基　　金：supported by the China National Funds for Distinguished Young Scientists(61025006) 

主　　题：improved Hilbert-Huang transform(HHT) instanta-neous frequency narrowband radar imaging precession cone-shaped targets 

摘      要：Imaging the spatial precession cone-shaped targets with narrowband radar is a new technical approach in mid-course recognition problem. However, most existing time-frequency methods still have some inevitable deficiencies for extracting microDoppler information in practical applications, which leads to blurring of the image. A new narrowband radar imaging algorithm for the precession cone-shaped targets is proposed. The instantaneous frequency of each scattering point is gained by using the improved Hilbert-Huang transform, then the positions of scattering points in the parameter domain are reconstructed. Numerical simulation and experiment results confirm the effectiveness and high precision of the proposed algorithm.