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

• 中辻 秀人

  大阪府立大学工学部

• 大松 繁

  大阪府立大学大学院工学研究科

書誌事項

タイトル別名

• Decomposition and Reconstruction of Signal in Real-Time Spectral Analysis
• リアルタイム スペクトル カイセキ ニ オケル シンゴウ ノ ブンカイ ト サイコウセイ

抄録

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.

収録刊行物

• 電気学会論文誌Ｃ（電子・情報・システム部門誌）

  電気学会論文誌Ｃ（電子・情報・システム部門誌） 127 (7), 1123-1130, 2007

  一般社団法人 電気学会

キーワード

• 分解と再構成
• 振幅特性
• 直線位相特性
• 積分ウェーブレット変換

詳細情報

• CRID: 1390001204604473344
• NII論文ID: 10019522622
• NII書誌ID: AN10065950
• DOI: 10.1541/ieejeiss.127.1123
• BIBCODE: 2007ITEIS.127.1123N
• ISSN: 13488155
• ISSN: 03854221
• NDL書誌ID: 8878816
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8878816
• Web Site: https://www.jstage.jst.go.jp/article/ieejeiss/127/7/127_7_1123/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可