Laser frequency hopping underwater acoustic-induced digital communication system and laser frequency hopping underwater acoustic-induced digital communication method
A digital communication system and laser technology, applied in ultrasonic/sonic/infrasonic transmission systems, transmission systems, electromagnetic transmitters, etc., can solve the problems of poor marine communication security and high communication link requirements, and achieve good laser-induced acoustic conversion efficiency , reducing the probability of interception, flexible and convenient installation
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[0035] A laser frequency hopping underwater acoustic digital communication system, such as figure 1 As shown, it is mainly composed of a signal sending computer, a digital modulation module, a laser, an underwater acoustic collector, an underwater acoustic amplification module, a digital demodulation module and a signal receiving computer. Wherein the signal sending module, the digital modulation module and the laser are located above the water surface. The underwater sound collector, the underwater sound amplification module, the digital demodulation module and the signal receiving computer are located underwater. The output end of the signal sending computer is connected to the input end of the laser through the digital modulation module, and the output end of the laser is connected to the underwater acoustic collector wirelessly after passing through the atmospheric channel and the underwater acoustic channel in turn, and the output end of the underwater acoustic collector ...
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