High-speed underwater communication system based on blue-green light source

Abstract

The invention belongs to the technical field of wireless communication, and specifically discloses a high-speed underwater communication system based on a blue-green light source. An efficient gallium nitride-based LED (Light Emitting Diode) or a laser light source which is 450nm or about 520nm in light emitting wavelength is used; an emitter comprises a signal acquiring module, an analog-to-digital conversion module, a compressing and amplifying module, a direct-current driving power supply, a blue-green light source, a corresponding heat-dissipation packaging device, an emitting antenna and a waterproof device; and a receiver comprises a signal receiving antenna, an automatic aligning module, a detector, a signal amplifying and decompressing module, a digital-to-analog conversion module, a signal recovering module and a waterproof module. In the high-speed underwater communication system, a receiving end automatic aligning module is added, so that short-distance and long-distance high-speed underwater communication can be realized. The high-speed underwater communication system has the advantages of large bandwidth, high data transmission rate, high confidentiality, low energy consumption and short time delay.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a high-speed underwater communication system based on a blue-green light source. Background technique [0002] Marine resources are currently an important resource that countries around the world are competing for. Underwater equipment such as submarines, unmanned underwater vehicles, and underwater sensors play a key role in exploring and competing for marine resources. At present, underwater communication equipment commonly used underwater acoustic communication, ultra / very low frequency radio communication and blue-green visible light communication. The transmission distance of underwater acoustic communication is relatively long, but the bandwidth is low, it is seriously affected by multipath interference, the bit error rate is high, and the confidentiality is poor; ultra / very low frequency radio communication also has narrow frequency band, small c...

AI Technical Summary

Problems solved by technology

The transmission distance of underwater acoustic communication is relatively long, but the bandwidth is low, it is seriously affected by multipath interference, the bit error rate is high, and the confidentiality is poor; ultra / very low frequency radio communication also has narrow frequency band, small communication capacity, low communication frequency, and high communication rate. Low problem; underwater blue-green light communication is a hot spot in underwater communication in recent years. Light waves with wavelengths between 400nm and 580nm have relatively small attenuation in seawater, which is called "blue-green window".

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