RESEARCH ON THE LASER TRANSMISSION SIMULATION BASED ON RANDOM PHASE SCREEN IN ATMOSPHERIC TURBULENT CHANNEL
Yanli Feng1, 2, Dashe Li2, 3, Shue Liu4
1Department of Computer Foundation Studies, Shandong Institute of Business & Technology, China
2Key Laboratory of Intelligent Information Processing in Universities of Shandong (Shandong Institute of Business and Technology), China
3School of Computer Science and Technology,, Shandong Institute of Business & Technology, China
4School of Computer Science and Technology, Binzhou Medical University, China
On the basis of collimated Gaussian beams, the paper focused on the modelling and simulating of the transmission of laser beams using two-dimension random phase screens in the atmospheric turbulence channel. Firstly, with the analysis of the transmission model of Gaussian beams through the phase screens, the simulation theory of random phase screens and the depth range model of the phase screens were proposed. Then, In accordance with Kolmogorov atmospheric turbulence theories, a two-dimension random phase screen was built using Fourier transform. Numerical simulation experiments were conducted with low frequency compensation to simulate the propagation of Gaussian collimated beam in Kolmogorov turbulence. Finally, the two-dimension random phase screen was testified by the phase structure function. The results showed that the approach of simulating the random phase screen using Fourier transform was appropriate after compensating the low frequency.