Underwater wireless sensor network target tracking method based on sensor node strategy selection

A sensor node and wireless sensor technology, applied in network topology, wireless communication, advanced technology, etc., can solve the problems of reducing sensor working time, useless information encroaching on underwater channel spectrum resources, node energy waste, etc., to reduce energy consumption and Effect of communication load

Inactive Publication Date: 2013-05-08
ZHEJIANG UNIV
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  • Application Information

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Problems solved by technology

Such nodes account for the vast majority in large-scale underwater sensor networks. If the above-mentioned nodes are kept working for a long time, not only the useless information generated will seriously encroach on the already very precious underwater channel spe...

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  • Underwater wireless sensor network target tracking method based on sensor node strategy selection
  • Underwater wireless sensor network target tracking method based on sensor node strategy selection
  • Underwater wireless sensor network target tracking method based on sensor node strategy selection

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Embodiment

[0027] Step 101: Initialize the underwater wireless sensor network, spread the wireless sensor network nodes evenly in the underwater environment, all nodes have uniform specifications, such as communication distance, detection distance, etc., all nodes are in working state, and maintain the detection function, but The communication function can be turned off, all nodes must know the location data.

[0028] Step 102: At time k=0, set the estimated initial position of the target and the estimated variance of the initial target according to the initial distribution of the target.

[0029] Step 103: At time k, there is an elliptical area estimated for the target position. The ellipse area of ​​target position estimation at this moment can be obtained through the Kalman filter prediction process at the last moment. Select the node closest to the center of the ellipse area as the processing node, and the processing node at the previous moment will transmit the target motion inform...

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Abstract

The invention discloses an underwater wireless sensor network target tracking method based on sensor node strategy selection. According to the method, firstly, a node which is closest to an initial position in estimated distance is used as a processing node, wherein the node is selected according to initial position estimation and variance estimation of a moving target, then the node is used as a circle center, estimated triple distance of standard deviation is used as a radius to select an observing node, and when the distance between the position of the observing node and the position of a target is smaller than observing range of a sensor, observing data is sent to the processing node which is used for estimating a target position estimation value and a variance estimation value using kalman filtering according to the observing value. A sensor node closest to the target position is selected according to the target position estimation value and used as a processing node of the next time, and the position estimation value and the variance estimation value of the processing node of the previous time are sent to the current processing node until the moving target exceeds the tracking range of an underwater sensor network. By means of the underwater wireless sensor network target tracking method based on sensor node strategy selection, energy consumption and communication load of underwater wireless sensor network target tracking are effectively lowered.

Description

technical field [0001] The invention relates to an underwater wireless sensor network target tracking method for sensor node strategy selection Background technique [0002] Underwater wireless sensor network refers to a network in which a large number of sensor nodes and autonomous vehicles are deployed in a certain water area to cooperate in monitoring and collecting data of interest in the surrounding environment. Sensor nodes can self-organize to establish a network and perform acoustic communication. , the designated node transmits the acquired data to the surface or shore-based control center, thus realizing the integration of the underwater sensor network and the land communication network. Underwater sensors usually feature low power consumption and short transmission distances. [0003] Underwater target tracking is an important application of underwater sensor networks. The underwater sensor network has the characteristics of wide distribution and large number of...

Claims

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Application Information

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IPC IPC(8): H04W52/02H04W84/18
CPCY02D30/70
Inventor 谢立周圣贤宋克兰
Owner ZHEJIANG UNIV
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