Research On Algorithm Of Underwater Sensor Network Localization

Recently,with the transformation of the complex international situation,The state pays more attention on the development of ocean resource and conservation.Whether the acquisition, perception of the ocean information or observations from the boiling water under the sensor network node positioning technology.Node localization technology is one of an important support of the other techniques in underwater sensor networks. Therefore, the research on node positioning water sensor network algorithm be imperative and significant.Underwater wireless sensor network is other from the land,underwater environment is more complex than land and Influenced by ocean currents, salinity, water biological factors.Underwater sensor node is not fixed,it puts forward a new challenge for sensor network node localizationNow underwater sensor network node location usually use anchor nodes or AUV auxiliary positioning,because of these auxiliary equipment exists,so that the energy consumption and the equipment cost of node localization is costly.Restricting the development of underwater sensor nodes. Aiming at the above problems presents Anchor-Free Localization Algorithm(AFLA) and Localization for restrict-active 3D UWSN(LAR).AFLA algorithm using the distance information between the nodes through the equation and numerical analysis of node localization.LAR algorithm used mobile relationship between neighbor nodes for locating.And analysis of the flow of water environment and the proposed motion compensation mechanism.In the course of the research, analysis of environmental water and constructs the dynamic network model.Verified by simulation relative to the anchor node and needs AUV mobile assisted localization algorithm.AFLA algorithm and LAR algorithm has lower error and better stability.