Simulation for Space target interference imaging system distorted by atmospheric turbulence

Abstract

Interference imaging system for space target has close relation with atmospheric environment, and atmospheric turbulence disturbance distorts terribly the wavefront phase of any transported optics launched from any optics system. In the space target interference imaging system the phase-closure-principle is adopted, in order to eliminate possible effects of atmospheric turbulence on the target image. Based on the power spectrum method and the Fourier transform method, the numerical simulation of wavefront phase screen, which is distorted by atmospheric turbulence conforming to the statistical rules of kolmogonov model and modified Von Karmen model, is respectively implemented. Various images by several different phase-screen models on the interference imaging system are obtained. Simulation results show that, with the advantage of adopting phase-closure-principle, the possible effects of atmospheric turbulence imaging can be eliminated basically.

The enhancement effect of backscattering for laser propagation through turbulent atmosphere

“…Subsequently, these macroscopic phenomena such as light intensity fluctuation [2], phase fluctuation, beam drift and beam expansion usually appear [3][4]. It maybe increases the research difficulty in the field of atmospheric optics, especially affecting the lidar detection accuracy, astronomical observation accuracy and free space optical communication efficiency [5][6]. Therefore, it is particularly important to study the characteristics of laser propagating through turbulence atmospheric .…”

Optimizing calculation of phase screen distribution with minimum condition along an inhomogeneous turbulent path

“…[1] However, owing to inhomogeneity in the temperature and pressure of the atmosphere, the refractive index varies along the optical path, which in turn leads to angle-of-arrival fluctuations, intensity fluctuations, and beam broadening. [2,3] Thus, these deleterious effects of turbulence severely limit the performance of the laser communication system.…”

Solving the atmospheric scattering optical transfer function using the multi-coupled single scattering method

“…In high-resolution images from satellites, blurring caused by atmospheric scattering and turbulence severely impairs the image quality. [1][2][3] Atmospheric turbulence is usually corrected by self-adaptive or active optics, [5][6][7][8] while atmospheric scattering can only be partially corrected by using software approaches, such as the image enhancement based on the atmospheric optical transfer function (OTF), [4] which is directly connected to the atmospheric conditions, e.g., aerosol and cloud optical depths and their micro-physical properties.…”