Underwater wireless optical communication method, device and system

Abstract

The invention provides an underwater wireless optical communication method, device and system, and the method comprises the steps: obtaining communication data, processing the communication data according to a preset corrected serial communication protocol, obtaining a plurality of modulation signals corresponding to the communication data, and enabling the modulation signals to be in one-to-one correspondence with pre-generated parallel optical wave communication channels; for each light wave communication channel, modulating the light wave of the light wave communication channel according toa modulation signal corresponding to the light wave communication channel to obtain a modulated light wave carrying the modulation signal; a beam expander corresponding to the parallel communicationchannel generation technology is used for processing all the modulated light waves to obtain light beams corresponding to the parallel communication channel generation technology, and the light beamsare composed of the modulated light waves; and the light beams are sent to the corresponding receiving ends, so that the receiving ends process the light beams to obtain communication data. Accordingto the invention, the communication transmission bandwidth and the transmission distance can be effectively improved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to an underwater wireless optical communication method, device and system. Background technique [0002] There are a large number of resources in the ocean, and the development and research of the ocean has become an important research topic. When studying the ocean, an underwater unmanned submersible vehicle (AUV, Autonomous Underwater Vehicle) and an underwater sensor network (UWSN, Underwater Sensor Network) are set up. Among them, the communication between the AUV and the UWSN mainly uses sound waves as the transmission signal. carrier to realize data transmission and communication. [0003] After research, it is found that the frequency of sound waves is very low, usually tens of Hz to dozens of KHz, so the transmission bandwidth of sound waves is very limited, and the distance of sound waves in water is very short, and sound waves are affected by other noises in seawat...

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Problems solved by technology

[0003] After research, it is found that the frequency of sound waves is very low, usually tens of Hz to dozens of KHz, so the transmission bandwidth of sound waves is very limited, and the distance of sound waves in water is very short, and sound waves are affected by other noises in seawater, resulting in communication is very unstable

With the wide application of underwater communication, the acoustic wave communication technology with short transmission distance and low bandwidth can no longer meet the current underwater communication needs. Therefore, how to improve the communication bandwidth and communication distance in water has become an urgent problem for many researchers. The problem

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