A Laser Acoustic Underwater Communication System Adaptive to Sea Wave Height

Abstract

A laser-acoustic underwater communication system with self-adaptive wave height. In the field of laser-acoustic underwater communication, in order to solve the problems in the existing technology that the wave height cannot be adaptively adjusted, the weather is bad, and the platform is disturbed. The problem of low sound conversion efficiency and poor underwater communication quality includes lasers, beam expanders, zoom optical systems, laser ranging systems, controllers, and motors. The beam emitted by the laser is expanded by the beam expander and enters the zoom Optical system, the light beam is focused under the water surface after passing through the zoom optical system, which is excited to generate sound waves for communication, and the laser ranging system is excited to measure the height of the sea waves in real time, and the real-time measured sea level height data is transmitted to the master control system for data processing and transmission The electric signal is sent to the motor, and the motor controls the zoom optical system to adjust accordingly to compensate for the sea level change caused by the waves, so as to maintain the best underwater laser focus position and realize real-time adjustment of the underwater communication system breakdown position.

Description

Technical field [0001] The present invention belongs to the field of laser, and more particularly to a highly adaptive laser-like communication system for waves. Background technique [0002] Submarine is an important part of modern military power, hidden and reliable is the main goal of submarine sides of-shore communications, and laser-like-water communication technologies combine infrared lasers in the atmosphere of transmission loss and sonication in seawater attenuation. In the field of underwater communications, there is a wide range of application prospects. Laser Sound Water Communication Technology With aerospace platform to carry lasers, the modulated laser signal transmitted by the air platform is focused on the surface of the seawater surface and underwater, and the sound wave signal is excited by the light-stricken effect, and the underwater target receives the sound wave signal and recovered. The encoded information is implemented to realize laser transmissions in t...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems in the prior art that the sea wave height cannot be adaptively adjusted, the weather is bad, and the carrying platform has a large disturbance, the photoacoustic conversion efficiency is low, and the underwater communication quality is poor, and an adaptive sea wave height is proposed. Laser Acoustic Underwater Communication Optical System

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