Based on the Singular Value Decomposition Fast Wavelet Ridge Intra Pulse Modulation Recognition

Abstract:

As a good time and frequency domain localization features, the method of wavelet ridge became one of effective ways to identify the pulse modulation. Aiming at the problem of the low intra pulse recognition rate of the wavelet ridge method in the situation of low signal-to-noise ratio, this paper presented a method of fast wavelet ridge intra pulse modulation based on singular value decomposition. The basic idea of this method:The first signal for fast Morlet wavelet transform; determined the singular value decomcomposition filtering threshold; According to the iterative method to extract the wavelet ridge was to calculate the instantaneous signal teristics; then to identify signal according to the different characteristics of signal instantaneous frequency. The simulation results show that: In less than or equal 0dB SNR situation, this method can improve the recognition rate of common pulse modulation.

• Periodical: Applied Mechanics and Materials (Volumes 556-562)
• Pages: 4933-4940
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.556-562.4933
• Online since: May 2014
• Authors: Shu Ge Yin*, Wei Liu, Chao Wang
• Keywords: Fast Wavelet Transform, Intra Pulse Recognition, Singular Value Decomposition (SVD)

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