@article{SisLab2306, volume = {37}, month = {December}, title = {Underwater sound propagation in Tokin Gulf and its applications for communication}, author = {Cao Quyen Tran and Van Nui Nguyen}, publisher = {Hanoi University of Industry}, year = {2016}, journal = {Journal of Science and Technology}, url = {https://eprints.uet.vnu.edu.vn/eprints/id/eprint/2306/}, abstract = {Underwater sound propagation (USP) is a complicated problem since in almost cases we do not have enough knowledge (both in theory and experiments) on required parameters for long range channel estimations. In USP problem we must consider features of ocean surface, bottom as well as water column properties. Those quantities are varying in space whereas oceanographic quantities changing in time. This paper solve USP problem in Tonkin gulf in winter using wave propagation theory. From that it is defined the impulse response (IR) and the distribution of the underwater sound channel (USC) in Tonkin gulf. Some results using proposed USC combining space modulation(SM) are shown.} }