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Chirplet based nonnegative time-frequency distribution for FM(m)let transform
Zou, HX; Wang, DJ; Dai, QH; Li, YD
Source PublicationCHINESE JOURNAL OF ELECTRONICS
2005-07-01
Volume14Issue:3Pages:509-512
SubtypeArticle
AbstractThis 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.
KeywordFm(m)Let Transform Chirplet Transform Matching Pursuit Nonnegativity
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000230509500030
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ia.ac.cn/handle/173211/9111
Collection09年以前成果
Affiliation1.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
Recommended Citation
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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