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Chirplet based nonnegative time-frequency distribution for FM(m)let transform
Zou, HX; Wang, DJ; Dai, QH; Li, YD
2005-07-01
发表期刊CHINESE JOURNAL OF ELECTRONICS
卷号14期号:3页码:509-512
文章类型Article
摘要This paper proposes a method of devising a nonnegative Time-frequency distribution (TFD) for displaying the decomposition results of FM(m)let transform. Underlying this method are the facts that the chirplet is a special case of FM(m)let and that the Wigner-ville distribution (WVD) of Gaussian chirplet is nonnegative. The true essence of the method is to migrate the values of WVDs of Gaussian chirplets to the positions of Instantaneous frequencies (IFs) of the best matched FM(m)let atoms for different signal components. The relative merits and usefulness of the resulting TFD are twofold: First, it is nonnegative; second, its localization is identical to that of WVD. Therefore, the resulting TFD is more flexible and advantageous for delineating the time-varying spectral contents of a nonstationary signal.
关键词Fm(m)Let Transform Chirplet Transform Matching Pursuit Nonnegativity
WOS标题词Science & Technology ; Technology
收录类别SCI
语种英语
WOS研究方向Engineering
WOS类目Engineering, Electrical & Electronic
WOS记录号WOS:000230509500030
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文献类型期刊论文
条目标识符http://ir.ia.ac.cn/handle/173211/9111
专题09年以前成果
作者单位1.Tsing Hua Univ, Dept Automat, Beijing 100084, Peoples R China
2.Tsing Hua Univ, State Key Lab Intelligent Technol & Syst, Beijing 100084, Peoples R China
3.Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit, Beijing 100080, Peoples R China
4.Tsing Hua Univ, Dept Math Sci, Beijing 100084, Peoples R China
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GB/T 7714
Zou, HX,Wang, DJ,Dai, QH,et al. Chirplet based nonnegative time-frequency distribution for FM(m)let transform[J]. CHINESE JOURNAL OF ELECTRONICS,2005,14(3):509-512.
APA Zou, HX,Wang, DJ,Dai, QH,&Li, YD.(2005).Chirplet based nonnegative time-frequency distribution for FM(m)let transform.CHINESE JOURNAL OF ELECTRONICS,14(3),509-512.
MLA Zou, HX,et al."Chirplet based nonnegative time-frequency distribution for FM(m)let transform".CHINESE JOURNAL OF ELECTRONICS 14.3(2005):509-512.
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