摘要
由于非点源效应，行星际闪烁很强时，也会出现ｍ２１的情况，因此仅用ｍ２１作为弱散射的判据有时并不是很准确的．本文考查了行星际闪烁中闪烁指数随观测频率变化的规律，频率指数在弱散射时为１，而在很强散射时则为负值．利用这种性质可以判断散射的性质．
Because radio source is not a point source,m2 is probable as IPS disturbance is strong.So to decide weak scattering by means of is not accurate.The frequency index is equal to 1 for weak scattering,but it will be negative as scattering is Strong.Thus,it is necessary to distinguish between weak scattering and very strong scattering by means of investigating the frequency index.
基金
国家自然科学基金
关键词
行星际闪烁
弱散射
闪烁指数
信号频率
interplanetary scintillation
weak scattering
frequency index
