摘要
在太阳引力场中,射电源信号的传播方向和速度均发生变化。方向的变化改变了射电源在天球上的视位置。速度的变化改变了信号传播的“光行时”。为了计算引力效应产生的附加时延,有人依据视位置变化,有人依据光行时变化。本文结论是,前一种算法在概念上是错误的。
In the solar gravitation field, both the propagation direction and velocity of radio signal from a source could be changed. The former effects the apparent position of the source in celestial sphere, and the latter effects the 'light time' of the signal. The evaluations of the extra-delay resulted from the gravitation effects were based on the change of apparent position by some authors or on the change of 'light time' by others. We conclude that these evaluations are not equivalent with each other and the former is wrong in the conception.
出处
《中国科学院上海天文台年刊》
1991年第12期1-4,共4页
Annals Shanghai Astronomical Observatory Chinese Academy of Sciences
