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Layering based mobile multi-hop underwater acoustic network dynamic self-localization method

A self-positioning and network technology, applied in network topology, electrical components, wireless communication, etc., can solve the problems of low positioning accuracy and high energy consumption, achieve the effect of expanding coverage and detection range, and solving self-positioning problems

Active Publication Date: 2017-03-08
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0007] In order to overcome the deficiencies of the existing technology and solve the problems of low positioning accuracy and high energy consumption in the prior art, the present invention proposes a layer-based high-precision, low-overhead dynamic node for the mobile multi-diving underwater acoustic network self-positioning method

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  • Layering based mobile multi-hop underwater acoustic network dynamic self-localization method
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  • Layering based mobile multi-hop underwater acoustic network dynamic self-localization method

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] The network is composed of several anchor nodes and ordinary nodes. The anchor nodes are fixed on the seabed and can obtain their absolute position information; There will be some drift.

[0034] The present invention obtains distance information according to communication between common nodes, anchor nodes and surrounding neighbor nodes, and divides common nodes in the network into several layers. The positioning method ensures the positioning accuracy while effectively reducing the communication traffic in the self-positioning process, and is more suitable for underwater environments. The flow chart of the present invention is as figure 1 As shown, the specific steps are as follows:

[0035] Step 1: Arrange the anchor nodes and ordinary nodes underwater, and assign an ID number to each anchor node and ordinary node according to the order in ...

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Abstract

The invention provides a layering based mobile multi-hop underwater acoustic network dynamic self-localization method and relates to the technical field of underwater acoustic communication and an underwater acoustic network. The layering based mobile multi-hop underwater acoustic network dynamic self-localization method comprises the steps of dividing common nodes into a plurality of layers; adopting different self-localization algorithms by the nodes in different layers based on the characteristics of the nodes in each layer; and finishing self-localization by the common nodes through communication with an anchor node and rest adjacent nodes to obtain the location information of the common nodes. As a layered localization mechanism is adopted, the underwater acoustic network coverage and detection range is enlarged, and the self-localization problem of the multi-hop mobile network can be solved. after the network nodes are subjected to layering, different self-localization methods are adopted by the nodes in different layers and a self-localization method which is based on or not based on distance information is used at the same time, so that communication expense in a mobile network self-localization process is greatly reduced whole the localization precision is ensured, and the layering based mobile multi-hop underwater acoustic network dynamic self-localization method is more suitable for an underwater environment.

Description

technical field [0001] The invention relates to the technical field of underwater acoustic communication and underwater acoustic network, in particular to a node dynamic self-positioning method. Background technique [0002] Network node self-location is one of the supporting technologies of underwater acoustic networks. It can be used to identify the location of monitoring data sources, manage network topology, implement routing protocols based on node locations and data storage technologies based on geographic location, etc. Marine engineering construction, marine resource development, marine science development, and the maintenance of national marine rights and interests all play an extremely important role. [0003] Underwater acoustic networks often need to monitor and cover a wide range of sea areas, so the detection distance of single-hop networks is limited, and multi-hop underwater acoustic networks need to be used to increase the network monitoring range. Unlike la...

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Application Information

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IPC IPC(8): H04W40/24H04W84/18
Inventor 申晓红高婧洁王海燕董海涛张梦娜梅毫迪
Owner NORTHWESTERN POLYTECHNICAL UNIV
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