Liquid crystal atmospheric turbulence simulator

描述

This product can quickly and quantitatively simulate the influence of atmospheric turbulence when the beam is transmitted in the atmosphere. It can simulate the effects caused by atmospheric turbulence when the beam is transmitted in the turbulent atmosphere: light intensity flicker (under limited aperture reception conditions), arrival angle undulation, beam propagation, spot drift, optical phase distortion and beam coherence degradation and other effects). The input parameters are configurable, and parameters such as transmission distance, refractive index structure constant, atmospheric coherence length can be set, and the output results can be monitored. It can be widely used in various types of laser system function verification and performance testing in atmospheric environment.

The liquid crystal atmospheric turbulence simulator can simulate the main effect characteristics of laser transmission in the earth’s atmospheric environment, such as: light intensity flickering, angular undulation and spot drift; The input parameters can be configured, and parameters such as altitude, elevation angle, transmission distance, time and location can be set, and the output results can be monitored and compared with theoretical values. It can be widely used for functional verification and performance testing of various types of atmospheric channel laser systems.

This product has completed a number of key technology research, entered the pilot stage, the successful transformation of this product, will create huge economic and social value, for the development of the industry to provide new growth points.

Technical advantages:

• High turbulence generation accuracy;
• low repeatability;
• Quick to set up, quick to deploy.

Fields of application:

• Wireless optical communication system testing;
• Various types of laser ranging and radar system testing;
• Other types of laser systems operating in atmospheric environments.

Main technical indicators:

Software functions and interface:

The software interface is shown in the figure below, with three working modes to choose from:

• Direct input of atmospheric coherence length for turbulence simulation, turbulence phase screen generated in real time.
• Zennick polynomials are used to generate phase displays. Perform turbulence simulations.
• Enter the atmospheric environment parameters, and the software automatically calculates the atmospheric coherence length for turbulence simulation.