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Underwater wireless sensor network positioning algorithm based on mobility prediction

A wireless sensor and network positioning technology, which is applied in the direction of location information-based services, positioning, wireless communication, etc., can solve the problem of insufficient positioning of anchor nodes

Active Publication Date: 2019-11-12
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] In the mobility prediction algorithm, the positioning accuracy of the anchor node controls the positioning accuracy of the entire network, but the anchor node positioning in the existing mobility prediction algorithms is not high enough

Method used

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  • Underwater wireless sensor network positioning algorithm based on mobility prediction
  • Underwater wireless sensor network positioning algorithm based on mobility prediction
  • Underwater wireless sensor network positioning algorithm based on mobility prediction

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Embodiment Construction

[0071] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

[0072] Such as figure 1 As shown, a positioning algorithm based on mobility prediction for underwater wireless sensor networks uses three kinds of sensor nodes: buoy nodes, anchor nodes and unknown nodes. The buoy node locates its own position through GPS, and the anchor node is a node with stronger computing performance and larger communication radius compared with unknown nodes in the network. The anchor node communicates with the buoy node to locate its own position information. Unknown nodes are nodes that cannot communicate with buoy nodes, and compared with anchor nodes, they have poor computational performance, small communication radius and limited energy, and it is generally not expected to waste energy. Unknown nodes communicate w...

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Abstract

The invention discloses an underwater wireless sensor network positioning algorithm based on mobility prediction. The algorithm introduces an improved backtracking search optimization algorithm on thebasis of a conventional mobility prediction positioning method. The algorithm adopts three sensor nodes, namely a buoy node, an anchor node and an unknown node. The algorithm comprises the followingsteps of: (1) initializing a wireless sensor network; (2) positioning anchor nodes; (3) calculating anchor node speed information; (4) calculating unknown node speed information; and (5) positioning unknown nodes. The algorithm can adapt to the underwater wireless sensor network in practical application. The node positioning precision is effectively improved, and the calculation overhead is reduced.

Description

technical field [0001] The invention belongs to the technical field of underwater wireless sensor network applications, and in particular relates to an underwater wireless sensor network positioning algorithm based on mobility prediction. Background technique [0002] Underwater Wireless Sensor Networks (UWSNs) is a network monitoring system composed of sensor nodes with communication and computing capabilities in a water environment through self-organization. UWSNs are composed of one or more types of sensor nodes. These nodes are deployed to the target position through their own movement or artificial placement, and finally form a network structure with specific performance, and cooperate to complete the monitoring of the underwater environment. UWSNs technology is widely used in underwater environmental observation, coastal monitoring, seabed exploration, disaster prevention, scientific exploration, commercial development, and military or terrorist incident detection. Th...

Claims

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Application Information

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IPC IPC(8): H04W4/02H04W4/021H04W64/00G01S5/26
CPCG01S5/26H04W4/021H04W4/023H04W4/027H04W64/003H04W64/006
Inventor 万新旺杨振诚董帅王鹤张海成李逸伟
Owner NANJING UNIV OF POSTS & TELECOMM
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