Design And Implementation Of Underwater Wireless Communication System Transmitter Based On Current Field

With the rapid development of modern human society,the consumption of various types of resources is growing.As the land resources can't meet the human needs,human beings begin to accelerate exploration of the oceans.In the process of such ocean underwater exploration,modern communication technology provides people with great help.Conduction current field wireless communication technology can realize short-range wireless data transmission under water.Compared with traditional underwater acoustic communications technology,the current field of underwater wireless communication technology is less disturbed by the communication environment,so it has certain advantages in underwater wireless communications.This paper mainly introduces the design and implementation of underwater wireless communication system transmitter based on the theory of conduction current field.In the theoretical part,it analyzes the theory of conduction current field and OQPSK modulation technology,and the communication system simulation model of conduction current field is established.In the design section,it completes the design of digital hardware platform and details the design and implementation process of transmitter hardware,including the design principles and programs of the Class D amplifier,and the design and implementation of the impedance matching.Finally,the paper completes the transmission and reception of the wireless data and verifies correctness and feasibility of the theory of conduction current field communication.Research results of this paper have a strong practical engineering background.It's applicable to underwater sensor data recovery and underwater divers communications in civilian aspects.In military aspects,it can be applied to communications between AUV and surface ships,ships communicating with each other,and underwater divers scheduling.