Excellence in Research and Innovation for Humanity

International Science Index


Select areas to restrict search in scientific publication database:
7652
Envelope Echo Signal of Metal Sphere in the Fresh Water
Abstract:
An envelope echo signal measurement is proposed in this paper using echo signal observation from the 200 kHz echo sounder receiver. The envelope signal without any object is compared with the envelope signal of the sphere. Two diameter size steel ball (3.1 cm & 2.2 cm) and two diameter size air filled stainless steel ball (4.8 cm & 7.4 cm) used in this experiment. The target was positioned about 0.5 m and 1.0 meter from the transducer face using nylon rope. From the echo observation in time domain, it is obviously shown that echo signal structure is different between the size, distance and type of metal sphere. The amplitude envelope voltage for the bigger sphere is higher compare to the small sphere and it confirm that the bigger sphere have higher target strength compare to the small sphere. Although the structure signal without any object are different compare to the signal from the sphere, the reflected signal from the tank floor increase linearly with the sphere size. We considered this event happened because of the object position approximately to the tank floor.

References:

[1] O. Hodges R.P. Underwater acoustic analysis, design and performance of sonar. United Kingdom: John Wiley & Son, 2010.
[2] Amico A.D-, and Pittenger R. "A Brief history of active sonar Aquatic Mammals" vol. 35(4): pp. 426 - 434, 2009.
[3] Johannesson, K.A., and R.B. Mitson, Fisheries acoustics. A practical manual for aquatic biomass estimation. FAO Fish. Tech. Pap; 240:249 p, 1983.
[4] Urick R.J. Principles of underwater sound 3rd edition. USA : Mc Graw Hill; 1983.
[5] Ruiz T.I., Petillot Y., Lane D., and Judith B. "Tracking objects in underwater multibeam sonar images" IEEE Colloquium On Motion Analysis and Tracking, pp. 1-7. 1999
[6] Sarangapani S., Miller J.H, Potty G.R., Reeder D.B., Stanton T.K., and Chu D. " Measurements and modeling of the target strength of divers, Oceans 2005 - Europe, vol. 952, pp. 952-956, 2005.
[7] MacLennan D.N. " Target strength measurements on metal spheres, Scottish Fisheries Research Report ( 25) 1982.
[8] Drew A.W. " Initial results from a portable dual beam sounder for in situ measurements of target strength of fish, OCEANS-80, pp. 376 - 380. 1980.
[9] Jech J.M., Chu D., Foote K.G., Hammar T.R., Huffnagle L.C. Jr. "Calibrating two echo sounders, OCEANS Proceedings, vol. 3, pp. 1625 - 1629, 2003.
[10] Foote K.G. & D.N. Maclennan. " Comparison of copper and tungsten carbide calibration spheres. J. Acoust. Soc. Am. 75 (2): 612 - 616, 1984.
[11] Arnaya N, Sano N, and Lida K, " Studies on acoustic target strength of squid, Bull. Fac. Fish. Hokkaido Univ.9(3), pp. 187- 200. 1983.
[12] Benoit Bird K.J, Au W.W.L. "Target strength measurements of Hawaiian Mesopelagic boundary animals, J. Acoust. Soc. Am. 110(2), pp. 812 - 819. 2001.
Vol:11 No:10 2017Vol:11 No:09 2017Vol:11 No:08 2017Vol:11 No:07 2017Vol:11 No:06 2017Vol:11 No:05 2017Vol:11 No:04 2017Vol:11 No:03 2017Vol:11 No:02 2017Vol:11 No:01 2017
Vol:10 No:12 2016Vol:10 No:11 2016Vol:10 No:10 2016Vol:10 No:09 2016Vol:10 No:08 2016Vol:10 No:07 2016Vol:10 No:06 2016Vol:10 No:05 2016Vol:10 No:04 2016Vol:10 No:03 2016Vol:10 No:02 2016Vol:10 No:01 2016
Vol:9 No:12 2015Vol:9 No:11 2015Vol:9 No:10 2015Vol:9 No:09 2015Vol:9 No:08 2015Vol:9 No:07 2015Vol:9 No:06 2015Vol:9 No:05 2015Vol:9 No:04 2015Vol:9 No:03 2015Vol:9 No:02 2015Vol:9 No:01 2015
Vol:8 No:12 2014Vol:8 No:11 2014Vol:8 No:10 2014Vol:8 No:09 2014Vol:8 No:08 2014Vol:8 No:07 2014Vol:8 No:06 2014Vol:8 No:05 2014Vol:8 No:04 2014Vol:8 No:03 2014Vol:8 No:02 2014Vol:8 No:01 2014
Vol:7 No:12 2013Vol:7 No:11 2013Vol:7 No:10 2013Vol:7 No:09 2013Vol:7 No:08 2013Vol:7 No:07 2013Vol:7 No:06 2013Vol:7 No:05 2013Vol:7 No:04 2013Vol:7 No:03 2013Vol:7 No:02 2013Vol:7 No:01 2013
Vol:6 No:12 2012Vol:6 No:11 2012Vol:6 No:10 2012Vol:6 No:09 2012Vol:6 No:08 2012Vol:6 No:07 2012Vol:6 No:06 2012Vol:6 No:05 2012Vol:6 No:04 2012Vol:6 No:03 2012Vol:6 No:02 2012Vol:6 No:01 2012
Vol:5 No:12 2011Vol:5 No:11 2011Vol:5 No:10 2011Vol:5 No:09 2011Vol:5 No:08 2011Vol:5 No:07 2011Vol:5 No:06 2011Vol:5 No:05 2011Vol:5 No:04 2011Vol:5 No:03 2011Vol:5 No:02 2011Vol:5 No:01 2011
Vol:4 No:12 2010Vol:4 No:11 2010Vol:4 No:10 2010Vol:4 No:09 2010Vol:4 No:08 2010Vol:4 No:07 2010Vol:4 No:06 2010Vol:4 No:05 2010Vol:4 No:04 2010Vol:4 No:03 2010Vol:4 No:02 2010Vol:4 No:01 2010
Vol:3 No:12 2009Vol:3 No:11 2009Vol:3 No:10 2009Vol:3 No:09 2009Vol:3 No:08 2009Vol:3 No:07 2009Vol:3 No:06 2009Vol:3 No:05 2009Vol:3 No:04 2009Vol:3 No:03 2009Vol:3 No:02 2009Vol:3 No:01 2009
Vol:2 No:12 2008Vol:2 No:11 2008Vol:2 No:10 2008Vol:2 No:09 2008Vol:2 No:08 2008Vol:2 No:07 2008Vol:2 No:06 2008Vol:2 No:05 2008Vol:2 No:04 2008Vol:2 No:03 2008Vol:2 No:02 2008Vol:2 No:01 2008
Vol:1 No:12 2007Vol:1 No:11 2007Vol:1 No:10 2007Vol:1 No:09 2007Vol:1 No:08 2007Vol:1 No:07 2007Vol:1 No:06 2007Vol:1 No:05 2007Vol:1 No:04 2007Vol:1 No:03 2007Vol:1 No:02 2007Vol:1 No:01 2007