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Target tracking method based on underwater wireless sensor network

A wireless sensor and target tracking technology, applied in wireless communication, electrical components, etc., can solve problems such as network fragility and load imbalance, and achieve the effect of improving target tracking performance

Inactive Publication Date: 2013-06-12
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The processing nodes change as the trajectory of the maneuvering target changes, which solves the problem of network fragility and load imbalance in centralized particle filtering

Method used

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  • Target tracking method based on underwater wireless sensor network
  • Target tracking method based on underwater wireless sensor network
  • Target tracking method based on underwater wireless sensor network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0039] Step 101: Initialize the underwater wireless sensor network, randomly sow wireless sensor network nodes 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.

[0040] Step 102: The sensor node detects the target, and wakes up the nodes within the detection range. These nodes in the detection range are clustered according to the principle, that is, the node M with the highest signal reception strength is selected as the cluster head node, and the nodes within the single-hop communication range of the cluster head node M and the cluster head node form a cluster, and the remaining nodes continue to sleep state.

[0041] Step 103: The nodes in the cluster observe the target, process the received signal locally, and then send the data to the cluster head node. The strength model of t...

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Abstract

The invention discloses a target tracking method based on an underwater wireless sensor network. The method selects cluster head nodes according to a strongest signal principle at first. Then, a cluster network is formed according to single hop distance principle to observe a target. If observation signal strength exceeds a threshold value, observation data are sent to cluster head nodes. The cluster head nodes receive the data which are transmitted by thick internal nodes. A resampling particle filtering algorithm is utilized to estimate a target position and variance at present moment. The cluster head nodes are constantly updated according to target movements. A node state estimating value and a variance value of a previous cluster head node are transmitted to a present cluster head node. The present cluster head node estimates moving target positions through a modified resampling particle filtering algorithm until the moving target exceeds a tracking range of the underwater wireless sensor network. The target tracking method based on the underwater wireless sensor network can estimate the position and the variance of the underwater target by utilizing the filtering tracking method of the modified resampling particle algorithm. Target tracking property of the underwater wireless sensor network is improved.

Description

technical field [0001] The invention relates to a target tracking method based on an underwater wireless sensor network. 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 nodes, and the nodes c...

Claims

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Application Information

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IPC IPC(8): H04W40/12H04W40/24
Inventor 谢立周圣贤宋克兰
Owner ZHEJIANG UNIV
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