Research on sand dumping detection based on sound absorption in seawater

Against the illegal dumping by dredging barges, a project which utilizes the principle of sound absorption in turbid seawater that achieves the frequency characteristic curve of underwater communication channel by transmitting sweep signal with constant amplitude periodically is put forward in this article. The particle concentration in seawater will change drastically when the dredging barge dumps sediment and the frequency characteristic curve will change with it. Then, it can be determined whether an illegal dumping is present by detecting the difference of the adjacent curves. The project is preliminarily proved practicable in theory via a series of simulations with MATLAB, according to the computing model of the coefficient of sound absorption in turbid seawater.