A method for real-time tracking of mobile unknown nodes in sensor networks

Abstract

The invention discloses a method for real-time tracking of mobile unknown nodes in a sensor network, which is applied in the field of sensor networks. Aiming at the problem that sensor nodes can complete high-precision real-time tracking under the constraint of limited energy, the invention establishes a sparse network based on extended Kalman filter Matrix model, and adopt Fast-ADMM-with Restart algorithm to go solving model, have realized reducing the quantity of tracking node as much as possible within the scope that tracking precision allows, therefore improved the average life-span of node in the whole sensor network; And method of the present invention It is based on the cyclic iteration of the server segment algorithm, which can effectively reduce the calculation consumption of the sensor node itself.

Description

technical field [0001] The invention belongs to the field of sensor networks, and in particular relates to a compromise algorithm between error precision and anchor node load balancing in the process of tracking a mobile unknown node in the sensor network. Background technique [0002] In wireless sensor networks, facing the challenges of limited energy and weak computing power of most sensor nodes, the service life of sensor nodes cannot reflect good results. During the movement of sensor nodes, due to the communication distance between nodes, real-time changes, resulting in additional energy consumption. Not only that, in a large-scale sensor network, nodes not only play the role of tracking unknown nodes, but also take on the role of collecting a large amount of environmental data and real-time monitoring. The diverse data undoubtedly brings a lot of power to the sensor nodes. pressure. In a relatively complex environment, it is very difficult for sensor nodes to achiev...

AI Technical Summary

Problems solved by technology

In a relatively complex environment, it is very difficult for sensor nodes to achieve target tracking tasks, and then the accuracy will be affected, and the communication reliability of nodes will be relatively reduced; at this stage, WSN (Wireless Sensor Networks, wireless sensor network) Many technologies in the field still cannot properly solve the balance between the low energy consumption of sensor nodes and the high precision of target tracking.

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