Title :
J-15 CW transmission data analysis and comparison with simulation results
Author :
Chiu, Yung-Sheng ; Chen, Yan-Shim ; Lin, Ying-Tsong ; Chen, Chi-Fang
Author_Institution :
Dept. of Eng. Sci. & Ocean Eng., National Taiwan Univ., Taipei
Abstract :
Data analysis and 3D numerical simulations of the acoustic propagation in the ASIAEX SCS experiment are presented in this paper. During the experiment personnel aboard the Taiwanese ocean research vessel, OR3, periodically deployed and towed the J-15-3 acoustic source to study the sound propagation in the ocean. One of the emitted waveforms was continuous wave (CW), which had 5 simultaneous 140, 260, 340, 452 and 560 Hz. Transmission losses of CW tones are obtained. As for numerical simulations, the wide-angle version of FOR3D is used to calculate transmission losses with background and measured sound speed profile containing internal tides. The model scenario includes also the sediment and 3D bathymetry. Results of data analysis and numerical simulations show that TL variations in the data are due to the variations in the sediment and water columns
Keywords :
acoustic wave transmission; bathymetry; data communication; sediments; underwater acoustic communication; underwater acoustic propagation; 140 Hz; 260 Hz; 340 Hz; 3D bathymetry; 3D numerical simulations; 452 Hz; 560 Hz; ASIAEX SCS experiment; CW tones; FOR3D is; J-15 CW transmission data analysis; OR3; TL variations; Taiwanese ocean research vessel; acoustic propagation; acoustic source; continuous wave; emitted waveforms; internal tides; sediment; sound propagation; sound speed profile; transmission loss; water columns; Acoustic emission; Acoustic propagation; Analytical models; Data analysis; Numerical simulation; Oceans; Personnel; Propagation losses; Sea measurements; Sediments;
Conference_Titel :
OCEANS '04. MTTS/IEEE TECHNO-OCEAN '04
Conference_Location :
Kobe
Print_ISBN :
0-7803-8669-8
DOI :
10.1109/OCEANS.2004.1406474
