GTD MODEL-BASED TIME-SHIFT INVARIANT TARGET IDENTIFICATION USING MATCHING PURSUITS AND LIKELIHOOD RATIO TESTS  

作　　者：Wang Dangwei Guan Xinpu Wang Shaogang Ma xingyi Su Yi 

机构地区：[1]School of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China [2]Air Force Radar Academy, Wuhan 430010, China

出　　处：《Journal of Electronics(China)》2008年第2期186-191,共6页电子科学学刊（英文版）

摘　　要：In order to improve the identification capability of ultra wide-band radar,this paper in-troduces a step-variant multiresolution approach for the time-shift parameter estimation. Subsequently,combining with the approach,a Geometrical Theory of Diffraction(GTD) model-based time-shift Invariant method to target identification using Matching Pursuits and Likelihood Ratio Test(IMPLRT) is developed. Simulation results using measured scattering signatures of two targets in an ultra wide-band chamber are presented contrasting the performance of the IMPLRT to the Wang's MPLRT technique.In order to improve the identification capability of ultra wide-band radar, this paper introduces a step-variant multiresolution approach for the time-shift parameter estimation. Subsequently, combining with the approach, a Geometrical Theory of Diffraction （GTD） model-based time-shift Invariant method to target identification using Matching Pursuits and Likelihood Ratio Test （IMPLRT） is developed. Simulation results using measured scattering signatures of two targets in an ultra wide-band chamber are presented contrasting the performance of the IMPLRT to the Wang＇s MPLRT technique.

关 键 词：Target identification Geometrical Theory of Diffraction （GTD） model Scattering mechanism Wide-band radar 

分 类 号：TN959.17[电子电信—信号与信息处理]