Underwater wireless optical communication method, device and system
A technology of wireless optical communication and communication channel, which is applied in the field of underwater wireless optical communication methods, devices and systems, can solve the problems of low frequency of sound waves, short distance of sound wave transmission, limited bandwidth of sound wave transmission, etc., to improve communication bandwidth and improve Communication distance, effect of improving communication bandwidth and communication distance
Active Publication Date: 2021-11-19
PENG CHENG LAB
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[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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[0084] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0085] In this application, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes none. other elements specifically listed, or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "com...
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The present invention provides an underwater wireless optical communication method, device and system. The method includes: acquiring communication data, processing the communication data according to a preset modified serial communication protocol, and obtaining multiple communication data corresponding to the communication data. modulation signal, the modulation signal is in one-to-one correspondence with the pre-generated parallel light wave communication channels; for each light wave communication channel, the light wave of the light wave communication channel is modulated according to the modulation signal corresponding to the light wave communication channel, and the modulated light wave carrying the modulation signal is obtained ; use the beam expander corresponding to the parallel communication channel generation technology to process each modulated light wave, and obtain the light beam corresponding to the parallel communication channel generation technology, the light beam is composed of modulated light waves; and send the light beam to the corresponding receiving end, so that the receiving end The light beam is processed to obtain communication data. The application of the present invention can effectively improve the communication transmission bandwidth and transmission distance.
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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IPC IPC(8): H04B13/02H04B10/50H04B10/516H04B10/60H04J14/02
CPCH04B10/503H04B10/516H04B10/60H04B13/02H04J14/0202
Inventor 孙彩明张爱东张龙石武
Owner PENG CHENG LAB