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Article Details

Copyright Statement: This is an open access article licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, even commercially as long as the original work is properly cited.

Acoustic Strength of Green Turtle and Fish Based on FFT Analysis

Author 1: Azrul Mahfurdz
Author 2: Sunardi
Author 3: Hamzah Ahmad
Author 4: Syed Abdullah Syed Abdul Kadir
Author 5: Nazuki Sulong

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Digital Object Identifier (DOI) : 10.14569/IJACSA.2013.040912

Article Published in International Journal of Advanced Computer Science and Applications(IJACSA), Volume 4 Issue 9, 2013.

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Abstract: the acoustic power at difference angle and distance were measure for four different ages of Green Turtles and three species of fish using modified echo sounder V1082. The echo signal from TVG output was digitized at a sampling rate 1MHz using analog to digital converter (Measurement Computing USB1208HS). Animals were tied with wood frame to ensure it can’t move away from the sound beam. The scatter value for fish demonstrates echo strength is different and depends on the angle of measurement. The lowest acoustic power of fish was recorded from their tail. The finding show that, there is significant difference between fish and turtles aged 12 to 18 years at 4.5 meter and 5 meter. The carapace and plastron of sea turtle gives high backscattering strength compare to other side. The high value obtained probably because of the hard surface of the carapace and plastron. This result is considered important in determining the best method of separating sea turtle and fish. Through this result, revealed that size, surface and animal angle play important role in determining acoustic strength value.

Keywords: Echosounder; Green Turtle; acoustic power; TED

Azrul Mahfurdz, Sunardi, Hamzah Ahmad, Syed Abdullah Syed Abdul Kadir and Nazuki Sulong, “Acoustic Strength of Green Turtle and Fish Based on FFT Analysis” International Journal of Advanced Computer Science and Applications(IJACSA), 4(9), 2013. http://dx.doi.org/10.14569/IJACSA.2013.040912

@article{Mahfurdz2013,
title = {Acoustic Strength of Green Turtle and Fish Based on FFT Analysis},
journal = {International Journal of Advanced Computer Science and Applications},
doi = {10.14569/IJACSA.2013.040912},
url = {http://dx.doi.org/10.14569/IJACSA.2013.040912},
year = {2013},
publisher = {The Science and Information Organization},
volume = {4},
number = {9},
author = {Azrul Mahfurdz and Sunardi and Hamzah Ahmad and Syed Abdullah Syed Abdul Kadir and Nazuki Sulong}
}


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