大气湍流畸变对空间目标清晰干涉成像仿真研究

本文利用功率谱反演法分别展开对符合 Kolmogonov 统计规律和修正后的Von Karmen 统计规律的大气湍流畸变波前相位屏进行了数值模拟研究. 得到各种模型下相位屏对该成像系统干涉成像图. 仿真结果表明, 采用闭合相位原理, 基本可以消除大气湍流对光束波前的影响, 验证了采用相位闭合技术的优势.

Simulation for Space target interference imaging system distorted by atmospheric turbulence

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.