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Volume 20 Issue 5
Sep.  1998
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Jin Liang, Yin Qinye, Yao Minli. INSTANTANEOUS FREQUENCY AND TIME-FREQUENCY DISTRIBUTIONS[J]. Journal of Electronics & Information Technology, 1998, 20(5): 597-603.
Citation: Jin Liang, Yin Qinye, Yao Minli. INSTANTANEOUS FREQUENCY AND TIME-FREQUENCY DISTRIBUTIONS[J]. Journal of Electronics & Information Technology, 1998, 20(5): 597-603.

INSTANTANEOUS FREQUENCY AND TIME-FREQUENCY DISTRIBUTIONS

  • Received Date: 1997-06-05
  • Rev Recd Date: 1998-01-04
  • Publish Date: 1998-09-19
  • The concept of instantaneous frequency(IF) and its traditional construct method--analytic method are introduced in this paper.Then by means of joint time-frequency analysis,the fphysical meaning of IF and its relation with the time-frequency distributions are also discussed.It is pointed out that one of the destinations of 2-D time-frequency distributions is to estimate the IF,and the different distribution can be of different effect.The performances of several popular distributions are compared,consequently AOP method is found to be a suitable one to estimate the IF.
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  • Armstrong E. A method of reducing distributes in radio signaling by a method of frequencymodulation. Proc. IRE, 1936, 24: 669-740.[2]Carson J, et al. Variable frequency electric circuit theory with application to the thoery of frequency modulation. Bell System Tech. J, 1937, 16: 513-540.[3]Cohen L. Time-Frequency Analysis. New York: Prentice Hall, 1995, 213-231.[4]Boashash B. Time-Frequency Signal Analysis. Melbourne: Longman Cheshire, 1992, 43-73.[5]黄朝云,殷勤业.时频分析中的若干算子.西安交通大学学报,1996, 21(9):28-32.[6]Gabor D. Theory of communication. Proc. IEE, 1946, 93(111): 429-457.[7]Qian S, et al. Joint Time-Frequency Analysis. New York: Prentice Hall, 1996, 187-209.[8]殷勤业,倪志芳,钱世锷,陈大庞.自适应旋转投影分解法.电子学报,1997, 25(4): 52-58.
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