Echo voltage reflected by turtle on various angles

(1) * Sunardi Sunardi Mail (Universitas Ahmad Dahlan, Indonesia)
(2) Anton Yudhana Mail (Universitas Ahmad Dahlan, Indonesia)
(3) Azrul Mahfurdz Mail (Polytechnic Sultan Haji Ahmad Shah, Malaysia)
(4) Sharipah Salwa Mohamed Mail (Universiti Malaysia Pahang, Malaysia)
*corresponding author

Abstract


This research proposes the acoustic measurement by using echo sounder for green turtle detection of 1 year, 12 and 18 years. Various positions or angles of turtles are head, tail, shell, lung, left and right side. MATLAB software and echo sounder are used to analyse the frequency and the response of the turtle as echo voltage and target strength parameter. Based on the experiment and analysis have been conducted, the bigger size of the turtle, the higher echo voltage and target strength. The target strength of turtle for lung and shell for all ages are -26.52 dB and –26.17 dB respectively. The target strength of turtles in this research is different with target strength of fish in our previous research. Therefore, for future research, the repellant system based on differences of target strength the turtle and fish for avoided the turtle trapping in the net can be implemented to protect the population of turtle from extinction

Keywords


Echo sounder; Echo voltage; Target strength; Green turtle; Fish

   

DOI

https://doi.org/10.26555/ijain.v1i1.9
      

Article metrics

Abstract views : 1935 | PDF views : 385

   

Cite

   

Full Text

Download

References


Sunardi, J. Din, A. Mohd, R.B.R. Hassan, Nadzri Seman, Target Strength Measurement of Selar boops (Oxeye scad) Using 38 kHz and 120 kHz, Asia-Pacific Conference on Applied Electromagnetics (APACE), Melaka-Malaysia, 4-6 December 2007,

A. Mahfurdz, Sunardi, H. Ahmad, S.A.S.A Kadir, N. Sulong. Acoustic Strength of Green Turtle and Fish based on FFT Analysis. International Journal of Advanced Computer Science and Applications (IJACSA). Vol. 4, No. 9, October 2013, New York, USA.

Sunardi, A. Yudhana, J. Din, Color Components Identification on Echogram, International Journal of Science and Advanced Technology (ISSN 2221-8386. Volume 3 No 6 June 2013

D N MacLennan; Target Strength Measurements on Metal Spheres, Marine Laboratory, Aberdeen

Jean-Pierre Sessareg, P. Cristini, N. Grigorieva, G. Fridman, Measurements and Modeling of Acoustic Scattering by a Spherical Elastic Shell Near an Interface, Department of Applied Mathematics and Mathematical Modeling, St. Petersburg State Marine Technical University, Russia

Herbert Uberall, Acoustic scattering from elastic cylinders and spheres: surface waves (Watson transform) and transmitted waves, Department of Physics, Catholic University of America, USA

S.M. Hasheminejad, N. Safari, Acoustic scattering from viscoelastically coated spheres and cylinders in viscous fluids, Department of Mechanical Engineering, Iran University of Science and Technology, Iran. December 2003

Sunardi, A. Yudhana, J. Din, R.B.R Hassan, Fish Species Identification Based on its Acoustic Target Strength Using In Situ Measurement, International Journal of Aquaculture, Aquarium, Conservation & Legislation (AACL), Nov 2010 (Vol. 3 No. 3)

Keltron, Karakulam, Project Profile on Commercial Echo Sounder, Special Products Group P.O. Thiruvananthapuram, India.

S.Anstee, Use of Spherical Objects as Calibrated Mine Hunting Sonar Targets, Maritime Operations Division Aeronautical and Maritime Research Laboratory

L. Midttun, O. Nakken, On Acoustic Identification, Sizing and Abundance Estimation of Fish, Institute of Marine Research, Bergen.

Mario Zampolli, Finn B. Jensen, Alessandra Tesei, Review of Target Strength of Cylindrical Objects for Waterside Security Applications, September 2008

A. Mahfurdz, Sunardi, H. Ahmad, Sea Turtle Detection Based on Echo Signal Analysis, Malaysian Postgraduate Conference on Electrical, Electronic and Engineering Control Technology (MCEET). Pahang-Malaysia, 16-17 February 2012.

Urick, R.J. 1983. Principles of underwater sound. 3rd ed. USA: McGraw-Hill.




Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

___________________________________________________________
International Journal of Advances in Intelligent Informatics
ISSN 2442-6571  (print) | 2548-3161 (online)
Organized by UAD and ASCEE Computer Society
Published by Universitas Ahmad Dahlan
W: http://ijain.org
E: info@ijain.org (paper handling issues)
   andri.pranolo.id@ieee.org (publication issues)

View IJAIN Stats

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0