Open AccessEffects of seafloor topography on underwater acoustic channel
Author(s) -
Hua Huang,
Baogang Jin,
Cheng Rui,
Juan Liu,
Jian Chen
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/369/1/012003
Subject(s) - seafloor spreading , geology , underwater , acoustics , channel (broadcasting) , sound (geography) , depth sounding , geophysics , oceanography , computer science , telecommunications , physics
Sound wave is the main means of underwater communication at present. Focusing on effects of seafloor topography on underwater acoustic channel, some acoustic propagation models were compared and the BELLHOP method was chosen based on the experiment data of typical seafloor topography. Then the date of OFES model and SOM method were used to get the marine parameters of temperature, salinity, depth and sounding velocity along SS section near Diaoyu Island. At last, the acoustic propagations along the SS section in flat bottom and real seafloor topography were simulated using BELLHOP method. The comparison of acoustic propagation loss was presented. The results show that the BELLHOP method can be used to get authentic results of acoustic propagation under different seafloor topographies, and seafloor topography has a significient effect on acoustic propagation characteritics, which are also influenced by the depth of sound source and sound receiver.