UWB radar target recognition based on time-domain bispectrum  

作　　者：Liu Donghong Zhang Yongshun Chen Zhijie Cheng Junbin 

机构地区：[1]The Missile Inst. , Air Force Engineering Univ. , Sanyuan 713800, P.R. China [2]The Radar and EW Inst. ,Equipment Academy of Air Force, Beijing 100085, P.R. China [3]Nanjing Univ. of Aeronautics and Astronautics, Nanjing 210016, P.R. China

出　　处：《Journal of Systems Engineering and Electronics》2006年第2期274-278,共5页系统工程与电子技术（英文版）

基　　金：This work was supported in part by National Defence Science and Technology Foundation (413220402)

摘　　要：Complex targets are irradiated by UWB radar, not only the mirror scattering echoes but also the multiscattering interacting echoes are included in target echoes. These two echoes can not be distinguished by classical frequency spectrum and power spectrurm. Time-domain bispectrum features of UWB radar signals that mingled with noise are analyzed, then processing this kind of signal using the method of time-domain bispectrum is experimented. At last, some UW-B radar returns with different signal noise ratio are simulated using the method of time-domain bispectrum Theoretical analysis and the results of simulation show that the method of extraction partial features of UWB radar targets based on time-domain bispectrum is good, and target classification and recognition can be implemented using those features.Complex targets are irradiated by UWB radar, not only the mirror scattering echoes but also the multiscattering interacting echoes are included in target echoes. These two echoes can not be distinguished by classical frequency spectrum and power spectrurm. Time-domain bispectrum features of UWB radar signals that mingled with noise are analyzed, then processing this kind of signal using the method of time-domain bispectrum is experimented. At last, some UW-B radar returns with different signal noise ratio are simulated using the method of time-domain bispectrum Theoretical analysis and the results of simulation show that the method of extraction partial features of UWB radar targets based on time-domain bispectrum is good, and target classification and recognition can be implemented using those features.

关 键 词：UWB Radar target recognition BISPECTRUM higher-order spectra. 

分 类 号：TN95[电子电信—信号与信息处理]