Distributive positioning method of mobile underwater sensor network node

Abstract

The invention discloses a distributive positioning method of a mobile underwater sensor network node. The method comprises the following steps: self-positioning an anchoring node on time according to a surface float equipped with a GPS device to obtain the position information of the anchoring node at the current time as the initial position information; building a prediction model of the anchoring node according to the initial position information; sequentially predicting the position at the next time based on the initial position information and the prediction model and according to the preset positioning cycle; acquiring the initial position information of a general node by referring to the initial position information of other underwater nodes; sequentially predicting the position at the next time based on the initial position information of the general node and according to the group characteristics and the preset positioning cycle. According to the method, the distributive positioning algorithm is adopted, which fully utilizes the movement model of the underwater node, and thus the positioning information of each node is obtained on the premise that the communication times of the anchoring node and the general node are reduced, and as a result, the energy consumption is decreased.

Description

technical field [0001] The invention relates to the technical field of underwater sensor networks, in particular to a distributed positioning method for nodes in a mobile underwater sensor network. Background technique [0002] Underwater Sensor Networks (UWSN) are widely used in marine environment monitoring, submarine resource detection, disaster warning, auxiliary navigation, homeland defense, etc. and other fields have broad application prospects. In recent years, with the rise of the marine economy and the increasing emphasis on marine rights and interests in various countries, the underwater sensor network has become one of the ocean hot topics that scientific research institutions and scholars in various countries have paid close attention to. Node positioning is one of the most important supporting technologies for underwater sensor networks, and plays an important role in many underwater applications that require node location information, such as marine environmen...

AI Technical Summary

Problems solved by technology

Because in this algorithm, when ordinary nodes select reference nodes for self-location, only the confidence of the reference nodes is considered, and the spatial correlation of the reference nodes is ignored, so the group motion characteristics caused by the spatial correlation of nodes in the underwater environment are not fully obtained. Therefore, the positioning effect of ordinary nodes is limited

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