SENDING AND RECEIVING SYSTEM FOR SUBSEA WIRELESS COMMUNICATION USING LASER LIGHT SOURCE, AND WIRELESS COMMUNICATION METHOD USING THE SAME

摘要

The present invention relates to a subsea wireless communication system. More specifically, the invention provides a transmitting device and a receiving device for subsea wireless communication, which are suitable for a subsea environment and of high reliability by introducing an optical communication based on a laser light source into a subsea wireless communication system; a wireless communication system including the same and a wireless communication method using the same. The subsea wireless communication system of the invention has the following advantages: 1) clearing a communication fault caused by high turbidity and floating materials of seawater by introducing a laser light source as a light source of subsea optical communication, which transmits a strong light energy on a narrow area; 2) overcoming the drawbacks of a laser light source which has an intense straightness and a narrow light width, and enhancing the reliability of wireless communication by introducing a light diffusion means and an alignment means; 3) strengthening an immunity against noises occurring under the subsea environment by installing multiple laser light sources having various wavelengths in parallel and transmitting identical information signals thereby; and 4) decreasing signal interference between a transmitting device and a receiving device and reducing the power consumption of communication equipment by applying a code modulation for spread spectrum in transmitting optical signals, and at the same time, embodying secure communication through encoding.