Amphibious communication system based on relay buoy

Abstract

The invention discloses an amphibious communication system based on a relay buoy. The system comprises an underwater vehicle carrying a camera used for collecting underwater information, wherein a collected video signal is modulated to a light source to send an optical signal; an optical communication receiving end module is arranged at the bottom of the buoy and is used for receiving the optical signal carrying the information collected by the underwater vehicle, such as image, video and voice; and a main control unit processes an electric signal output by an optical receiving end and then sends a video signal to a land base station through a wireless way. The land base station transmits a control signal through a reverse link to control operation of the underwater vehicle. According to the system, the buoy is taken as relay to complete amphibious communication, and the underwater data communication adopts the optical signal as a carrier, in comparison with acoustic technique, the underwater communication way adopting an optical technology has the advantages of high bandwidth, good security, low cost, high sensitivity and the like.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to an amphibious communication system based on relay buoys. Background technique [0002] For underwater image acquisition operations or underwater optical observation operations, underwater vehicles collect images and video information underwater, and generally transmit the data to ships through underwater acoustic communication, and the time delay of underwater acoustic communication technology is long. Large size, limited bandwidth; or store the collected data in the memory and wait for extraction on the shore, which is very inefficient. It can be seen that these two data acquisition methods seriously restrict the development of large-scale, high-precision underwater observation operations. [0003] We know that it is difficult to use radio communication in seawater, and the loss of sound waves in seawater is very small, so the current underwater communication mai...

AI Technical Summary

Problems solved by technology

[0003] We know that it is difficult to use radio communication in seawater, and the loss of sound waves in seawater is very small, so the current underwater communication mainly uses acoustic communication, but the side lobe is large during sound wave transmission, and the directionality is not strong. Although the communication distance is long However, the communication rate is low, and it is difficult to meet the increasing information transmission requirements of underwater applications.

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