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Type: Journal article
Title: Fast wavelet transform algorithms for sonar signal analysis
Author: Yu, L.
Ma, F.
White, L.
Citation: International Journal of Signal Processing Systems, 2013; 1(2):183-189
Publisher: Engineering and Technology Publishing
Issue Date: 2013
ISSN: 2315-4535
Statement of
Limin Yu and Fei Ma, Langford B. White
Abstract: In active sonar, received echoes are composed of multiple replicas of transmitted sonar signal with time delays and attenuations through multipath. In non-stationary scenarios, different multipath also exhibits different scaling. This phenomenon provides a way to explicitly resolve the multipath components given the availability of a rational orthogonal wavelet (ROW) analysis framework. This paper establishes the ground work of a wavelet-based multipath resolving structure by tackling the fast wavelet transform (FWT) filter bank (FB) design for ROWs. A review of different FWT algorithms in terms of scaling, translation and computational complexity is presented. The proposed FWT FB design for ROWs enables practical applications of the multipath/Doppler resolving structure in both active and passive sonar signal analysis. A simplified model for active sonar signal multipath resolving is presented to demonstrate the multipath resolving mechanism.
Keywords: Fast wavelet transform
sonar signal analysis
rational orthogonal wavelet
wavelet filter banks
Rights: © 2013 Engineering and Technology Publishing
DOI: 10.12720/ijsps.1.2.183-189
Appears in Collections:Aurora harvest
Electrical and Electronic Engineering publications

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