کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6952162 1451755 2014 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A local normalized method to eliminate riding waves appearing in the empirical AM/FM decomposition
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
پیش نمایش صفحه اول مقاله
A local normalized method to eliminate riding waves appearing in the empirical AM/FM decomposition
چکیده انگلیسی
The intrinsic mode function (IMF) generated by empirical mode decomposition (EMD) is usually seen as an amplitude and frequency modulation (AM-FM) signal. To obtain the FM part of an IMF, an empirical AM/FM decomposition method has been proposed by Huang and his coworkers. However, riding waves may appear in the empirical decomposition, which makes the instantaneous frequency (IF) physically meaningless. To eliminate the riding waves, riding wave turnover-empirical AM/FM decomposition method has recently been developed by Yang et al. In this paper, a local normalized method is proposed to eliminate the riding waves. Different from the previous method by Yang et al., the proposed method does not need any more empirical AM/FM decomposition and is carried out locally, which can significantly reduce computational complexity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Digital Signal Processing - Volume 25, February 2014, Pages 104-113
نویسندگان
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