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AUV (autonomous underwater vehicle)-assisted based underwater wireless sensor network positioning method

A wireless sensor, network positioning technology, used in wireless communication, network topology, electrical components and other directions

Inactive Publication Date: 2013-01-09
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the deficiencies of existing underwater wireless sensor network positioning methods, and provide an underwater wireless sensor network positioning method based on AUV assistance. Positioning again to improve positioning accuracy

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  • AUV (autonomous underwater vehicle)-assisted based underwater wireless sensor network positioning method
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  • AUV (autonomous underwater vehicle)-assisted based underwater wireless sensor network positioning method

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Embodiment Construction

[0026] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0027] The present invention first uses the centroid algorithm to locate the unknown node, and then estimates the positioning accuracy of the unknown node according to the number of beacon nodes around the unknown node, the distribution of the beacon nodes and the distance between the beacon node and the unknown node, and screens out the nodes For some nodes with low positioning accuracy, AUV is used to assist these nodes in the second positioning. AUV is a form of UUV (Unmanned Underwater Vehicle) that integrates artificial intelligence, depth vehicles, computer software, sensors and mission controllers with advanced technologies. Different AUV systems have different designs and functional divisions. The usual AUV system includes the following parts: power monitoring and management system, environmental detection system, obstacle detection system, navi...

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Abstract

The invention discloses an AUV (autonomous underwater vehicle)-assisted based underwater wireless sensor network positioning method. The method disclosed by the invention comprises the following steps: firstly, carrying out primary positioning on an unknown node by using a centroiding algorithm; estimating the positioning accuracy of the unknown node according to the number of beacon nodes around the unknown node, the distribution of the beacon nodes and the distance between each beacon node and the unknown node; screening out a plurality of nodes with a low positioning accuracy; and carrying out secondary positioning on the nodes by using an AUV. The method disclosed by the invention is less in calculation and communication consumption, and can fully use the AUV to improve the positioning accuracy of nodes and reduce the positioning errors, therefore, the method is applicable to the positioning of the unknown nodes of underwater wireless sensor networks.

Description

technical field [0001] The invention relates to a wireless sensor network positioning method, in particular to an underwater wireless sensor network positioning method, which utilizes AUVs to assist in realizing accurate positioning of unknown nodes in the network. Background technique [0002] The underwater environment is relatively complex, and positioning is limited by various aspects. Many wireless sensor network positioning technologies on the ground are not suitable for underwater. Common positioning algorithms for underwater wireless sensor networks mainly include buoy-based positioning algorithms, AUV-based positioning algorithms, USP (distributed Underwater Sensor Positioning framework) positioning algorithms, SBRAL (Surface-Based Reflection Anchor-free Localization) positioning algorithms, SLMP ( Scalable Localization scheme with Mobility Prediction) positioning algorithm, underwater ASP (Ad-hoc Position System) positioning system and magnetometer-based positionin...

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Application Information

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IPC IPC(8): H04W64/00H04W84/18
Inventor 刘林峰刘倩倩张宁申王汝传孙力娟肖甫
Owner NANJING UNIV OF POSTS & TELECOMM
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