薄相屏闪烁的数值分析

本文在弱闪烁条件下，利用广泛适用于星际闪烁、行星际闪烁和电离层闪烁的薄相屏理论，以行星际闪烁为算例，对薄相屏闪烁进行了数值分析。结果表明：垂直于介质运动方向上的不规则结构的大小对闪烁有着重要的影响，直接表现在频谱的变化趋势和振荡幅度的不同。尤其是当小于Ｆｒｅｓｎｅｌ尺度时，数值计算表明此时没有闪烁发生。

Numerical Analysis of Phase-Screen Scintillations

Under weak scintillation condition, computational analysis of interplanetary scintillations is given on the basis of phase-screen theory. It is shown that the irregularity scale in y-direction, Ay, has very important effects on intensity spectrum and phase spectrum. When A. is less than the Fresnel scale, our computational result shows that scintillation cannot be observed under this condition.