Noisy Reverberation Suppression Using AdaBoost Based EMD in Underwater Scenario

Reverberation suppression is a crucial problem in sonar communications. If the acoustic signal is radiated in the water as medium then the degradation is caused due to the reflection coming from surface, bottom, and volume of water. This paper presents a novel signal processing scheme that offers an...

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Bibliographic Details
Published in:International Journal of Oceanography 2014-01, Vol.2014 (2014), p.1-7
Main Authors: Cheepurupalli, Kusma Kumari, Konduri, Raja Rajeswari
Format: Article
Language:English
Subjects:
Algorithms
Decomposition
Marine
Methods
Noise
Parameter estimation
Signal processing
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Summary:Reverberation suppression is a crucial problem in sonar communications. If the acoustic signal is radiated in the water as medium then the degradation is caused due to the reflection coming from surface, bottom, and volume of water. This paper presents a novel signal processing scheme that offers an improved solution in reducing the effect of interference caused due to reverberation. It is based on the combination of empirical mode decomposition (EMD) and adaptive boosting (AdaBoost) techniques. AdaBoost based EMD filtering technique is used for reverberation corrupted chirp signal to decrease the noisy components present in the received signal. An improvement in the probability of detection is achieved using the proposed algorithm. The simulation results are obtained for various reverberation times at various SNR levels.
ISSN:1687-9406
1687-9414
DOI:10.1155/2014/563780