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Performance analysis of Towflex Hydrophones array with Acoustic elements of improved sensitivity.

Author(s)
Nasir Mahmood Pakistan Navy, Karachi, Pakistan
Sana U11Ah Khan Maritime Technologies Complex (MTC), National Engineering and Scientific Commission (NESCOM), Islamabad, Pakistan
Fakhar-E-Alam Maritime Technologies Complex (MTC), National Engineering and Scientific Commission (NESCOM), Islamabad, Pakistan
Waqas Alam Maritime Technologies Complex (MTC), National Engineering and Scientific Commission (NESCOM), Islamabad, Pakistan
Abstract
Towflex arrays of small length were manufactured by assembling in the respective core tubes, the commercially available and the new indigenously developed hydrophones. Calibrated acoustic sound source was used to determine their relative sensitivities. Digital data recorder was employed to record the sound source and tow noise data onboard a towing platform. The measured data was processed with MATLAB and a real time digital signal processor. Results have been compared which reveal that the performance of the Towflex array with indigenously developed new hydrophones is better than the one housing commercially available hydrophones wherein the broad band sound source is intercepted with relatively higher amplitude even at opening out distance from the tow path. Likewise the processed data indicates that the Towflex array having newly developed hydrophones have significantly reduced acceleration pickups. Here also the performance of the pre amplifiers working in tandem with the newly developed hydrophones indicates their low noise attributes. Systems engineering aspects of integrating the hydrophones in the array have been analyzed with the view to identify effects on performance of the array subsystems as a whole.
Publication Details
Page(s) 410-414
DOI DOI not available
Published Journal: Proceedings 6th International Bhurban Conference on Applied Sciences and Technology , Volume: 1, Issue: 0, Year: 2009

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