KEYWORDS: Acoustics, Telecommunications, Signal processing, Data communications, Data transmission, Design and modelling, Power supplies, Interfaces, Transducers, Sensors
With the promotion of "ocean power" strategy, more and more scholars have paid attention to the development and application of underwater acoustic communication technology. In order to achieve high-speed and stable underwater acoustic communication and reduce complex data transmission. Based on underwater acoustic communication mechanism, this paper designs and expounds a set of underwater acoustic communication system and signal processing system, data interface module, underwater acoustic transducer, underwater electronic module, power supply module and many other components. This system effectively ensures the stability and simplicity of data transmission process, expands good universality, and is of great significance to the universal system application of underwater acoustic communication machine.
The rapid development of marine fish farming provides high quality protein for human society. The design, construction and performance calculation of large-scale aquaculture equipment provide convenience and safety. Based on CFD and diffraction theory, the motion and load response of the mooring system of the aquaculture vessel under full load in four different sea areas were studied in this paper. The calculation results in frequency domain and time domain show that: The mooring system can meet the environmental load and specification requirements of level 4 sea state; In the frequency range of 0.2rad/s ~ 0.8rad/s, the hydrodynamic response of the mooring system is large.
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