Safe locating method for underwater sensor network

A wireless sensor and network technology, applied in positioning, safety devices, instruments, etc., can solve the problems of inability to transplant wireless sensor network positioning systems and security mechanisms, and insufficient research on underwater sensor network positioning systems.

Inactive Publication Date: 2014-04-30
TIANJIN UNIV
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Problems solved by technology

[0004] At present, the research on the positioning system of the underwater sensor network is not deep enough. At the same time, due to the characteristics of the underwat...

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  • Safe locating method for underwater sensor network

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Embodiment Construction

[0010] The present invention is divided into two modules of trust management and positioning, which mainly include processes such as obtaining trust elements, generating trust entries, obtaining trusted anchor node sets, and node positioning.

[0011] The realization steps of the present invention are:

[0012] Step 1: Obtain trust elements

[0013] Assuming that the anchor node i knows the coordinates (x, y), listen to the coordinates (x', y') sent by the anchor node j, calculate the coordinate distance according to the coordinates, and calculate the measurement distance d=T according to the ToA (Time of Arrival) ranging technology ×v, T is the transmission delay, v is the underwater sound wave velocity, and the distance between the two calculation results is defined

[0014] | ( x - x ′ ) 2 ...

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Abstract

The invention provides a safe locating method based on malicious anchor node detection in an underwater wireless sensor network. A trust management module and a locating module are related in the safe locating method, wherein in the trust management module, the direct trust values of nodes are described by adopting Beta distribution and observing interbehaviors among the nodes, and the direct trust values of the nodes are updated timely by updating interaction records. Contradictory factors are obtained by carrying out variance calculation on the direct trust values among the nodes and the global trust values, the contradictory factors are compared with a contradictory threshold value, and malicious slander nodes with the contradictory factors larger than the contradictory threshold value are removed. A cluster head collects the trust value information of all the nodes in a cluster, the nodes with the global trust values higher than a trust threshold value are judged as trusted nodes, and the trusted nodes are stored in a trusted node list. According to the safe locating method, the defamation aggressive behaviors of malicious nodes are detected based on a trust mechanism, the safety and reliability of the network are guaranteed thereof, and the safe locating method is especially suitable for the underwater wireless sensor network.

Description

technical field [0001] The invention relates to the field of underwater wireless sensor network security technology research, in particular to a security positioning method based on malicious anchor node detection. Background technique [0002] With the development of marine science and technology, underwater wireless sensor network has increasingly become a worldwide research hotspot. It is composed of underwater sensor nodes and convergence nodes. The sink node of the network transmits to the underwater subnetwork on the shore. [0003] Node positioning is the core supporting technology for many applications of underwater wireless sensor networks. However, due to the openness and limited resources of underwater wireless sensor networks, the node positioning process is extremely vulnerable to various attacks from inside or outside the network. Nodes may be captured by the enemy and become malicious nodes, or they may become selfish nodes to save limited resources. The exis...

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Application Information

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IPC IPC(8): H04W12/12H04W24/04G01S5/00H04W12/122H04W12/68
Inventor 金志刚刘自鑫张博林
Owner TIANJIN UNIV
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