Design And Implementation Of Internal Wave Observation Real-time Transmission Submarine-buoy System Based On Lridium Communication

Internal wave is a common Marine phenomenon in the northern part of the south China sea.It has a great impact on the development of Marine resources,the maintenance of national Marine security and the changes of Marine environment.Long-term,fixed point,continuous and accurate monitoring of Marine environment elements is the key to the internal wave observation.The internal wave observation real-time transmission submarine-buoy system is a device for on-site observation of a fixed point vertical profile of the ocean.It uses submarine-buoy technology,buoy technology,and satellite communication technology to send the acquired vertical profile marine environment elements through satellites to realize the early warning and forecast function of internal waves in the South China Sea.This article introduces several typical submarine-buoy technologies at home and abroad,analyzes their different characteristics and applicable environments.After comprehensive analysis and comparison,this article determines a scheme to combine traditional self-contained submersibles with sea communication buoys,and proposes the main research content of this article.In the research of the submarine-buoy system,this article explains the whole system and the main parts separately.In the introduction of the entire system,the system technical indicators were first proposed according to the hydro logical conditions in the South China Sea and the communication workflow of the submarine-buoy system was determined,then according to the characteristics of the South China Sea internal wave,the system deployment location and the system's equipped instruments were determined.The technology comparison of several currently used communication satellites was determined to determine the Iridium communication satellite system as a real-time data communication satellite system.Next,analyzing and designing the three main parts of the sea surface communication buoy,battery compartment,and buoyancy and attitude of the submarine-buoy system to ensure that the submarine-buoy system can safely and stablycollect and transmit marine environmental elements at a fixed vertical profile.In the study of real-time communication links,the software and hardware design of the data acquisition main control board and the data transmission beacon board are based on the principles of low power consumption,low latency,and high accuracy.According to the task requirements,the main control board and beacon board are designed and analyzed in terms of power management,power consumption calculation,interface design and other aspects.In the design of the server software,the purpose is to achieve the functions of receiving,processing,storing,and monitoring the status of the submarine-buoy equipment.After the design of the whole set of submarine-buoy system is completed,it is deployed on the sea after the land data transmission test is successful.The South China Sea internal wave marine environment data is successfully obtained in real time and the internal wave is forecasted and early-warned.Development has accumulated some experience.