期刊文献+

Time-domain compressive dictionary of attributed scattering center model for sparse representation

Time-domain compressive dictionary of attributed scattering center model for sparse representation
下载PDF
导出
摘要 Parameter estimation of the attributed scattering center(ASC) model is significant for automatic target recognition(ATR). Sparse representation based parameter estimation methods have developed rapidly. Construction of the separable dictionary is a key issue for sparse representation technology. A compressive time-domain dictionary(TD) for ASC model is presented. Two-dimensional frequency domain responses of the ASC are produced and transformed into the time domain. Then these time domain responses are cutoff and stacked into vectors. These vectored time-domain responses are amalgamated to form the TD. Compared with the traditional frequency-domain dictionary(FD), the TD is a matrix that is quite spare and can markedly reduce the data size of the dictionary. Based on the basic TD construction method, we present four extended TD construction methods, which are available for different applications. In the experiments, the performance of the TD, including the basic model and the extended models, has been firstly analyzed in comparison with the FD. Secondly, an example of parameter estimation from SAR synthetic aperture radar(SAR) measurements of a target collected in an anechoic room is exhibited. Finally, a sparse image reconstruction example is from two apart apertures. Experimental results demonstrate the effectiveness and efficiency of the proposed TD. Parameter estimation of the attributed scattering center(ASC) model is significant for automatic target recognition(ATR). Sparse representation based parameter estimation methods have developed rapidly. Construction of the separable dictionary is a key issue for sparse representation technology. A compressive time-domain dictionary(TD) for ASC model is presented. Two-dimensional frequency domain responses of the ASC are produced and transformed into the time domain. Then these time domain responses are cutoff and stacked into vectors. These vectored time-domain responses are amalgamated to form the TD. Compared with the traditional frequency-domain dictionary(FD), the TD is a matrix that is quite spare and can markedly reduce the data size of the dictionary. Based on the basic TD construction method, we present four extended TD construction methods, which are available for different applications. In the experiments, the performance of the TD, including the basic model and the extended models, has been firstly analyzed in comparison with the FD. Secondly, an example of parameter estimation from SAR synthetic aperture radar(SAR) measurements of a target collected in an anechoic room is exhibited. Finally, a sparse image reconstruction example is from two apart apertures. Experimental results demonstrate the effectiveness and efficiency of the proposed TD.
出处 《Journal of Central South University》 SCIE EI CAS CSCD 2016年第3期604-622,共19页 中南大学学报(英文版)
基金 Project(NCET-11-0866)supported by Education Ministry's new Century Excellent Talents Supporting Plan,China
关键词 attributed scattering center model parameter estimation DICTIONARY time domain 扩展模型 压缩字典 稀疏表示 时域响应 散射中心 属性 参数估计方法 自动目标识别
  • 相关文献

参考文献3

二级参考文献32

  • 1Rao B D,Engan K,et al..Subset selection in noise based on diversity measure minimization.IEEE Trans.on Signal Processing,2003,51(3):760-770.
  • 2Cuomo K M,Piou J E,Mayhan J T.UItrawide-band coherent processing.IEEE Trans.on Antennas and Propagation,1999,47(6):1094-1107.
  • 3Natarajan B.Sparse approximate solutions to linear systems.SIAM Journal on Computing,1995,24(2):227-234.
  • 4Wehner D R.High Resolution Radar(2^nd ed).Boston,MA:Artech House,1994:168-173.
  • 5Keller J B.Geometrical theory of diffraction.Journal of the Optical Society of America,1962,52(2):116-130.
  • 6Hurst M P,Mittra R.Scattering center analysis via Prony's model.IEEE Trans.on Antennas and Propagation,1987,35(8):986-988.
  • 7Potter L C,Chiang D M,et al..GTD-based parametric model for radar scattering.IEEE Trans.on Antennas and Propagation,1995,43(10):1058-1066.
  • 8McClure M R,and Carin L.Matching pursuits with a wave-based dictionary.IEEE Trans.on Signal Processing,1997,45(12):2912-2927.
  • 9Chen S,Donoho D L,Saunders M A.Atomic decomposition by basis pursuit.SIAM Review,2001,43(1):129-159.
  • 10Gorodnistsky I F,and Rao B D.Sparse signal reconstruction from limited data using FOCUSS:a re-weighted minimum norm algorithm.IEEE Trans.on Signal Processing,1997,45(3):600-616.

共引文献26

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部