リアルタイムスペクトル解析における信号の分解と再構成  [in Japanese] Decomposition and Reconstruction of Signal in Real-Time Spectral Analysis  [in Japanese]

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Author(s)

Abstract

In recent years, wavelet transform which gives expression in time-frequency domain has been adopted for a nonstationary process. Authors have proposed a new spectral analytical method in time-frequncy domain. In the conventional spectral analytical methods, the decomposition and the reconstruction of signals have been obtained analytically. The proposed method consists of two approaches. We call these approaches as Approach 1 and Approach 2. In this paper, we show the decomposition and reconstruction of signal based on Approach 1. First, we show that the signal is decomposed to the signal elements. They are called the decomposition waves, and all these decomposed waves are added to obtain the reconstructed wave. Next, we show that the magnitude characteristic and the phase characteristic between the original signal and the reconstructed wave. Then the conditions between the signal and the reconstructd wave are derived to realize a sufficiently approximated wave. By a numeric calculation example, we show the approximation ability by the proposed method.

Journal

  • IEEJ Transactions on Electronics, Information and Systems

    IEEJ Transactions on Electronics, Information and Systems 127(7), 1123-1130, 2007-07-01

    The Institute of Electrical Engineers of Japan

References:  5

Cited by:  1

Codes

  • NII Article ID (NAID)
    10019522622
  • NII NACSIS-CAT ID (NCID)
    AN10065950
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    03854221
  • NDL Article ID
    8878816
  • NDL Source Classification
    ZN31(科学技術--電気工学・電気機械工業)
  • NDL Call No.
    Z16-795
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
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