Maritime search and rescue wireless sensor network topology structure and topology control method thereof

Abstract

The invention discloses a maritime search and rescue wireless sensor network topology structure which comprises a plurality of common sensor nodes and aggregation nodes. The common sensor nodes are connected with one another in a wireless mode to form the network topology structure and used for monitoring search and rescue information in real time. The aggregation nodes are used for collecting the monitored information of all the common sensor nodes in a wireless sensor network. The aggregation nodes and the common sensor nodes are connected through two-way symmetrical links. When the space between any two nodes in the aggregation nodes and the common sensor nodes is smaller than the communication radius of each node, the two nodes are in direct communication, and if the space between any two nodes is larger than the communication radius, communication is achieved through other nodes in a multi-hop mode. According to the maritime search and rescue wireless sensor network topology structure, the influence of node displacement is added into the edge weight calculating process in a network model, the advantage of low topology redundancy of minimum spanning tree structures is fully utilized, and the mean distance of the minimum spanning tree structures is decreased by edge deleting and long-range edge adding through the small-world characteristic of a complex network.

Description

technical field [0001] The invention relates to a topology control technology of a maritime search and rescue wireless sensor network, in particular to a topology and a topology control method of a maritime search and rescue wireless sensor network. Background technique [0002] Maritime search and rescue wireless sensor network mainly uses wireless sensor network technology to realize real-time monitoring and tracking of search and rescue targets in maritime search and rescue activities. This network can make up for the passive situation in traditional maritime search and rescue activities where target individuals who fall into the water basically can only wait for the search and rescue personnel to search. Not only can the location information of the individual to be rescued be sent to the search and rescue party, but also the monitoring information of the wireless sensor itself on the environment and the search and rescue target can also be sent to the search and rescue p...

AI Technical Summary

Problems solved by technology

[0008] The invention provides a topology and topology control method of a wireless sensor network for maritime search and rescue, which solves the problem of dynamic topology control in a wireless sensor network for maritime search and rescue. The topology control method can generate a good topology with low average network distance and redundancy structure

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