The characteristic and topology structure of underwater acoustic communication network are introduced,and the function of every layer is studied.

Simulation of data link layer protocols for underwater acoustic networks;

As the large delay,low throughput and frequent data collision in single-channel underwater acoustic networks,this paper devises a dual-channel MAC protocol based on carrier-sense.

Aloha-LPD:a MAC protocol for underwater acoustic networks

In order to enhance the speed and stability of the underwater wireless acoustic networks, in this paper, we analyze two On -Demand routing protocols adapted to the underwater wireless acoustic networks and give the relational calculating formulas and characters, and point out the future research direction of routing protocols in the underwater acoustic networks.

Because of the restrictions of using GPS in underwater acoustic networks,a node locating arithmetic based on the distance information obtained from the method TOA is given in this article.

Based on shallow acoustic communication channel model,we establish a multi-paths model of linear frequency modulation(LFM) with cyclic-correlation characteristics,and calculate the theoretical value of intrinsic sound ray using Runge-Kutta method,and detect the result with the copy correlation testing method.