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《Journal of University of Electronic Science and Technology of China》 2004-03
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An Approach for Estimating Parameters of LFM Signal Based on Fractional Fourier Transform and Subspace Orthogonality

Du Dongping,Tang Bin (School of Electronic Engineering, UEST of China Chengdu 610054)  
Based on the fraction Fouier transform and subspace orthogonality,an approach,which detects and estimates the parameters of the low SNR LFM signal ,is proposed in this paper.The LFM signal is first transformed into a complex sinusoidal signal in term of the fraction Fourier transform,and then using the orthogonality between the subspace of noise and the subspace of the transformed signal,the detection and parameters estimation of LFM signal is achieved by finding the minimum/maximum. Computer simulation confirms its availability.
【CateGory Index】: TN957.51
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【References】
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【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 PANG Tong chuan, HE Pei kun, GAO Mei guo (Dept. of Electronics Engineering, Beijing Institute of Technology, Beijing100081, China);Fast Retrieval of Signal Subspace of Over-Determined Low-Rank Data Matrix[J];Journal of Beijing Institute of Technology;2001-03
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8 TIAN Jian sheng YANG Zi jie GAO Huo tao WU Shi cai CHENG Feng (School of Electronic Information, Wuhan University, Wuhan Hubei 430079, China);A method of estimation for the amplitude-phase characteristics of HF-radar′s array-channels[J];Chinese Journal of Radio Science;2002-06
9 XU Zhen hai WANG Xue song FENG De jun XIAO Shun ping ZHUANG Zhao wen (School of Electronic Science and Engineering, National University of Defense Technology, xzh520@sina.com, Changsha Hunan 410073, China);Adaptive estimation for joint spectrum in polarizational and spatial domains[J];Chinese Journal of Radio Science;2005-01
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【Co-references】
Chinese Journal Full-text Database 10 Hits
1 ZHAO Yi-zheng,YANG Jing-shu(Team of Postgraduate,The Electronic Engineering Institute of PLA,Hefei 230037,China);A method of instantaneous frequency estimation based on fractional Fourier tansformation[J];Journal of Anhui University(Natural Sciences);2005-01
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【Secondary References】
Chinese Journal Full-text Database 4 Hits
1 Li Hong Qin Yu-liang Li Yan-peng Wang Hong-qiang Li Xiang(School of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China);A FrFT Based Algorithm for Doppler Frequency Rate Estimation from LFM Coherent Pulse Train[J];Journal of Electronics & Information Technology;2010-11
2 BAI Xu-ping,ZHANG Feng,LIU Qiong-li,HU Feng-xia (Taiyuan Satellite Launch Center,Kelan 036301,China);LFM Signal Parameter Estimation Based on Time-frequency Representation[J];Modern Electronics Technique;2010-20
3 LIU Xu-bo1,SI Xi-cai1,LU Man-jun2,CAI Zhi-fu1(1.Dept.of Communication and Information System,Harbin Engineering Univ.,Harbin 150001,China;2.Shanghai Inst.of Radio Equipment,Shanghai 200090,China);Quick estimation to parameters of LPI radar-signals based on integral-envelope[J];Systems Engineering and Electronics;2010-10
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