Directional transmitting method and directional transmitting device for underwater communication node

Abstract

The invention discloses a directional transmitting method and a directional transmitting device used for an underwater communication node. The method is used for directionally transmitting a communication signal of the underwater communication node distributed in the way of anchoring or hanging and comprises steps of determining the direction of the target node: determining the direction of the target node by a transmitting node according to the position information of the transmitting node and the position information of the target node; and selecting a directional transducer pointing the target node direction currently to transmit: selecting a certain proper directional transducer arranged on the transmitting node by the transmitting node to transmit the signal to the target node according to the determined target node direction and the current direction information of the transmitting node. The invention also discloses a device, and the device calculates the direction of the target node before transmitting the communication signal by arranging a directional transmission transducer and a compass sensor on an underwater sound node, measures the direction of the node and then selects the directional transducer covering the corresponding target node currently to transmit.

Description

technical field [0001] The present invention relates to the field of underwater acoustic communication, more specifically, the present invention relates to a directional emission method and device for underwater communication nodes. Background technique [0002] Due to the large attenuation of electromagnetic waves in water, underwater acoustic communication technology is mainly used for medium and long-distance underwater wireless communication. With the increasingly important strategic position of the ocean, more and more multi-node underwater acoustic communication networks are used in applications such as marine environmental data collection and underwater target detection. In such a system, multiple nodes can serve as data transmission relays and backups for each other, which improves the communication distance and reliability. However, the current underwater communication network faces two outstanding problems: [0003] First, the energy of underwater acoustic commun...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the low energy efficiency of the underwater acoustic communication node caused by the omnidirectional emission of the underwater communication node deployed in the prior art by means of anchoring or hanging when transmitting signals in the horizontal direction and the underwater acoustic network For the problem of small communication capacity, the present invention realizes the directional transmission of the node when transmitting signals without changing the common anchoring or hanging mode of the node, thereby providing a directional transmission method for underwater communication nodes and device

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