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《Chinese Journal of Radio Science》 2007-06
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Parameter estimation of wideband LFM signals based on MP decomposition

WANG Jian-ying LU Xue YIN Zhong-ke (School of Information Science & Technology, SWJTU, Chengdu Sichuan 610031, China)  
A new method based on MP decomposition is presented to estimate the parameters of LFM signals in wideband array signal processing. The initial frequency and chirp rate of the LFM signals are obtained firstly through MP decomposition of the reference sensor output, over an over-complete vector dictionary G f , the atoms of which are vectors established according to the LFM signals’ initial frequency and chirp rate parameter; then the DOA parameter can be found by MP decomposition of the array output, over an over-complete matrix dictionary G θ , the atoms of which are matrixes established according to the signals’ the array geometry. The estimation resolution capabilities are shown to be much higher than conventional spatial time-frequency distribution (STFD) based methods, especially in the case of lower SNR and more signals. Numerical simulations are provided to demonstrate the effectiveness of the proposed method.
【Fund】: 国家自然科学基金项目(60602043 60772084);; 四川省重点科技计划项目(04GG021-020-5、03GG006-005-2);; 教育部留学回国人员科研启动基金(教外司[2004]527号)
【CateGory Index】: TN911
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【Citations】
Chinese Journal Full-text Database 2 Hits
1 Huang Ke-ji Tian Da Chen Tian-qi (Dept of Electron. Eng., Univ. of Electron. Sci. and Tech. of China, Chengdu 610054, China);DOA Estimation of Wideband Chirp Signals Based on Time-Frequency Subspace Decomposition[J];Journal of Electronics and Information Technology;2004-03
2 LIU Yun,LI Zhishun(College of Marine Engineering,Northwestern Polytechnical University,Xian 710072 ,China);Direction of Arrival Estimation for Wideband Sources Based on Time-Frequency Signal Representation[J];Acta Simulata Systematica Sinica;2004-07
【Co-citations】
Chinese Journal Full-text Database 4 Hits
1 LU Xue1,WANG Jian-ying2,YIN Zhong-ke2(1.Sichuan Jiuzhou Electric Group Co.,Ltd,Sichuan Mianyang 621000,China;2.School of Information Science & Technology,Southwest Jiaotong University,Chengdu 610031,China);DOA Estimation of Coherent LFM Signals Based on MP Decomposition[J];Journal of the China Railway Society;2008-04
2 DONG Ming-rong,DONG Yong-feng,XU Xue-zhong (Northwest Institute of Nuclear Technology,Xi'an 710024,China);Structure Design of Infrasonic Monitoring Arrays Based on F-K Analysis[J];Journal of System Simulation;2007-19
3 XUE Xiao-feng1,2,WANG Yong-liang2,ZHANG Yong-shun1,BAO Zheng2(1.Missile Inst.,Air Force Engineering Univ.,Sanyuan 713800,China;2.Key Research Lab,Air Force Radar Academy,Wuhan 430019,China);UWB radar signal DOA estimation based on ambiguity functions[J];Systems Engineering and Electronics;2007-12
4 WANG Dong-hui,PANG Wei-zheng,LIU Cheng-de(College of Information and Communication Engineering,Harbin Enginering University,Harbin 150001,China);DOA Estimation of wide-band Chirp signal based on cross-spectra of continuous wavelet[J];Applied Science and Technology;2007-04
【Co-references】
Chinese Journal Full-text Database 6 Hits
1 TIAN Da HUANG Ke-ji CHEN Tian-qi (College of E.E, UESTC, Chengdu Sichuan 610054, China);2-D AOA estimation of multiple wide-band FM sources based on spatial time-frequency distributions[J];Chinese Journal of Radio Science;2003-01
2 WANG Jian-ying YIN Zhong-ke CHEN lei(School of Information Science & Technology,Southwest Jiaotong University,Chengdu Sichuan 610031,China);Frequency estimation algorithm based on non-orthogonal decomposition[J];Chinese Journal of Radio Science;2007-01
3 LI Li-ping,ZHONG Fan,WEN Zhong (School of Electronic Engineering, UEST of China Chengdu 610054);Estimation of LFM Signal’s Time Parameters under Impulsive Noise[J];Journal of University of Electronic Science and Technology of China;2005-06
4 FU Ting,YAO De-zhong (School of Life Science & Technology, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China);Iterative Weighted Method of Sparse Decomposition and Preliminary Application[J];Acta Electronica Sinica;2004-04
5 LU Ze jun 1,2 , XIAO Xian ci 1(1. Department of Electronic Engineering, University of Elctronic S cience and Technology of China, Chengdu 610054, China)(2. No. 10 Research Institute, China Electronics Technology Group Corporation, C hengdu610036, China);Study on Subspace-Based Direction Finding Algorithm in the Presence of Impulsive Noise Environments[J];Acta Aeronautica Et Astronautica Sinica;2003-02
6 Huang Keji Tian Da Chen Tianqi (College of EE, UESTC, Chengdu 610054, P.R.China);DOA Estimation of WLFM Signals Using FRFT-MUSIC Based on the Focusing and Compensation in the Time Domain[J];Signal Processing;2003-01
【Secondary Citations】
Chinese Journal Full-text Database 2 Hits
1 JIN Liang 1,YIN Qin ye 2,LI Ying 2 (1 University of Information Engineering,Zhengzhou 450002,China; 2 Information Engineering Institute,Xi'an Jiaotong University,Xi'an 710049,China);Estimating Direction-of-Arrival Via Time-Frequency Signal Subspace Fitting[J];Acta Electronica Sinica;2001-01
2 Tian Da Huang Keji Chen Tianqi (College of E.E, UESTC, Chengdu 610054, China);A New Method for DOA Estimation of Wide-band LFM Sources with Low Computational Load[J];Signal Processing;2003-01
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