|Article title||THE HYDROACOUSTIC CONDITIONS CONSIDERING WHEN SOLVING THE PROBLEM OF SEA OBJECTS CLASSIFICATION AND THEIR COORDINATES DETERINATION|
|Section||SECTION IV. THE APPLICATION OF SUPERCOMPUTER TECHNOLOGIES IN SCIENCE, TECHNOLOGY AND INDUSTRY|
|Month, Year||11, 2016 @en|
|Abstract||As known, the main peculiarity of hydro acoustic field is a complicated dependence of signal propagation law on hydro acoustic conditions in the region. That is why the algorithms solving the majority of the practical problems, which as a rule are the inverse, must consider the current hydro acoustic conditions or in other words they must be matched with signal propagation medium. The distinctive peculiarity of matched field algorithms structure is that their input receives not only the signal parameters measured at the hydro acoustic antenna output but so it receives the model of the transmission characteristic of the propagation channel which has been formed using current condition parameters. The classification of the sea objects on background of processing their radiated noise is one of the most complicated practical hydro acoustic problems. Its solution must consider the current hydro acoustic conditions because the decision about the object class must be adopted on the background of parameters analyses of the signal which had traveled through the oceanic waveguide and had been transformed by it in accordance with the hydro acoustic conditions in the waveguide. The target of the work is to discuss the approach to consideration of the hydro acoustic conditions when developing and realizing noisy sea objects classification algorithms. The work contains the brief description of the methodology of the syntheses of classification algorithm and its species, namely the algorithm of simultaneous object classification and ranging. The computing circuit of implementation of the synthesized algorithm which assumes 2 cyclic processes, namely the process of formation of working models of classification features and the process of object classification and ranging, is brought and discussed. Both processes are asynchronous: computation is launched when obtaining new input data that for the first process occur once in 1–2 hours, and once in 1–20 seconds for the second. On each cycle of both processes the same computation differing only in input data is implemented. The computation executed on each cycle is well parallelized as includes a large number of the same computations. The processes demand different requirements for the calculator speed: tens Mflops for the first process and some Gflops for the second process.|
|Keywords||Hydro acoustics; sea object classification; hydro acoustic conditions; algorithm computa-tional scheme.|
|References||1. Urik R. Dzh. Osnovy gidroakustiki [Principles of underwater sound]. Leningrad: Sudostroenie, 1978, 448 p.
2. Akustika okeana [Underwater acoustics], ed. by L.M. Brekhovskikh. Moscow: Nauka, 1974.
3. Rasprostranenie zvuka vo flyuktuiruyushchem okeana [Sound transmission through a fluctuat-ing ocean], ed. by S. Flatte. Moscow: Mir, 1982, 336 p.
4. Bucker H.P. Use of calculated sound fields and matched field detection to locate sources in shallow water, Journal of the Acoustical Soc. of America, 1976, Vol. 59, No. 2, pp. 368-373.
5. Baggeroer A.B., Kuperman W.A., Schmidt H. Matched field processing: Source localization in correlated noise as an optimum parameter estimation problem, J. of the Acoustical Society of America, 1988, Vol. 83, pp. 571-587.
6. Baggeroer A.B., Kuperman W.A. Matched Field Processing in Ocean Acoustics, in Acoustic Signal Processing for Ocean Exploration, ed. by J.M.F. Moura and I.M.G. Loutrie, Kluwer Publishing, 1993.
7. Tolstoy A. Matched Field Processing for Ocean Acoustics. New Jersey: World Scientific Pub-lishing Co., 1993.
8. Zuykova N.V., Svet V.D. Soglasovannaya obrabotka signalov v okeanicheskikh volnovodakh [Matched Field Processing in ocean waveguide], Akusticheskiy zhurnal [Akusticheskij Zhurnal], 1993, Vol. 39, Issue 3, pp. 389-403.
9. Porter M.D., Tolstoy A. The matched field processing benchmark problems, J. of Computational Acoustics, 1994, No. 3, pp. 161-185.
10. Malyshkin G.S. Sovremennoe sostoyanie s razrabotkoy metodov i algoritmov obrabotki gidroakusticheskikh signalov, soglasovannykh so sredoy rasprostraneniya [Modern state of the matched field processing algorithms design], Trudy X1 Vserossiyskoy konferentsii "Prikladnye tekhnologii gidroakustiki i gidrofiziki" [Proceedings of the X1 Allrussian conference "Applied technologies of hydroacoustics and hydrophysics"]. St. Petersburg: Nauka, 2012, pp. 369-371.
11. Sazontov A.G., Malekhanov A.I. Soglasovannaya prostranstvennaya obrabotka signalov v podvodnykh zvukovykh kanalakh (obzor) [Matched Field Processing in underwater waveguide (review)], Akusticheskiy zhurnal [Akusticheskij Zhurnal], 2015, Vol. 61, No. 2, pp. 233-253.
12. Baggeroer A.B. Why did applications of MFP fail, or did we not understand how to apply MFP?, Proceedings of the 1st International Conference and Exhibition on Underwater Acous-tics. Corfu Island, Greece: Heraklion, 2013, pp. 41-49.
13. Marasev S.V., Mashoshin A.I. Zadachi, reshaemye sistemoy gidroakusticheskikh raschetov [Problems solving with the help of hydroacoustic calculation system], Morskaya radioelektronika [Marine Radio electronics], 2015, No. 2 (52), pp. 40-45.
14. Marasev S.V., Mashoshin A.I. Raschet dal'nosti deystviya gidroakusticheskikh sredstv v usloviyakh nepolnogo znaniya o tekushchikh gidroakusticheskikh usloviyakh [The calculation of sonar range in the lack of knowledge of hydroacoustic conditions], 7-ya rossiyskaya mul'tikonferentsiya po problemam upravleniya. Materialy konferentsii "Upravlenie v morskikh i aerokosmicheskikh sistemakh" (UMAS-2014), g. Sankt-Peterburg, 7-9 oktyabrya [7th Russian multimedia conference on the problems of management. Proceedings of the conference "Management in the marine and aerospace systems" (BUTTER-2014), Saint-Petersburg, 7-9 October], 2014, pp. 809-812.
15. Mashoshin A.I. Osobennosti sinteza algoritmov klassifikatsii podvodnykh ob"ektov po ikh gidroakusticheskomu polyu [Syhthesis of Algorithms for the Classification of Underwater Ob-jects from Their Underwater Sound Field], Akusticheskiy zhurnal [Akusticheskij Zhurnal], 1996, Vol. 42, No. 3, pp. 396-400.
16. Broadhead M.K. Broadband source signature extraction from underwater acoustics data with sparse environment information, JASA, 1995, Vol. 97, pp.1322-1325.
17. Azimi-Sadjadi M.R., Yao D., Jamshidi A.A., Dobeck G.J. Underwater target classification in changing environments using an adaptivefeature mapping, IEEE Transactions on neural net-works, 2002, Vol. 13, No. 5, pp. 1099-1111.
18. Jimenez L.A.T, Mayen H.G., Arteagoitia O.B., Garza D., Torres R. System for acoustic detec-tion and autonomous classification of targets in the sea (SIDACAM), Proceedings of 3nd Un-derwater Acoustics Conference and Exhibition, 21-26 June 2015, Crete island, Greece, 2015, pp. 137-144.
19. Fischell E.M., Schmidt H. Classification of underwater targets from autonomous underwater vehicle sampled bistatic acoustic scattered fields, JASA, 2015, Vol. 138, pp. 3773.
20. Mashoshin A.I. Ob odnom podkhode k sovmestnomu resheniyu zadach klassifikatsii i opredeleniya koordinat podvodnykh ob"ektov po ikh gidroakusticheskomu polyu [An Approach to the Problems of Simultaneous Classification and Localization of Underwater Objects from Their Underwater Sound Fields], Akusticheskiy zhurnal [Akusticheskij Zhurnal], 1999, Vol. 45, No. 1, pp. 124-127.
21. Lucas C., Heard G.J., Pelavas N. DRDC Starfish acoustic sentinel and phase gradient histo-gram tracking, Proceedings of 3nd Underwater Acoustics Conference and Exhibition, 21-26 June 2015, Crete island, Greece, 2015, pp. 669-676.
22. Bao C., Ma S., Zhang Z., Hu X., Wu Y., Meng Z. A robust passive source localization method using a single vector sensor, Proceedings of 3nd Underwater Acoustics Conference and Exhi-bition, 21-26 June 2015, Crete island, Greece, 2015, pp. 857-864.
23. Skarsoulis E., Papadakis P., Kalogerakis M., Piperakis G., Orfanakis E. A passive acoustic localization system for broadband sources, Proceedings of 3nd Underwater Acoustics Confer-ence and Exhibition, 21-26 June 2015, Crete island, Greece, 2015, pp. 341-348.