斜程大气传输光束孔径平滑到达角与像点起伏

像面到达角起伏、波面抖动和像点抖动通常是研究大气干扰情况下高分辨成像系统波前特性的重要方法之一。采用Rytov近似、包含湍流内外尺度影响的修正von Karmam近似谱和接收光学系统孔径滤波函数和传输权重函数中的Airy函数的高斯函数近似,研究了斜程湍流大气中传输束状波的波面抖动、像面到达角起伏和像点抖动规律,导出了圆孔接收系统测量到的包含湍流内外尺度影响的束状波孔径平滑波面抖动、像点抖动和像面到达角方差理论模型。

Aperture-averaged angle-of-arrival and image wander of light wave propagating through slant path atmospheric turbulence

the angle-of-arrival fluctuations of image,image displacement and tilt jitter are often used to investigate the properties of wave fronts corrugated by the atmosphere for high-angular-resolution techniques.On the basis of the Rytov approximation,the Gaussian function approximation of the aperture filter function of receiving optical system and the Airy function of propagation weighting function,and approximation modifying von Karmam spectrum of refractive index which is including outer and inner scale,the aperture-averaged angle-ofarrival variance,image displacement and tilt jitter observed by a telescope with a circular aperture of beams wave propagating through slant path atmospheric turbulence is discussed and the theory models of the aperture-averaged angle-of-arrival variance,image wander and tilt jitter are obtained.