The variations of velocity difference have obvious periodicity, which coincides with the satellite orbit period.

速度差各分量的变化具有很明显的周期性且与卫星轨道的运行周期相吻合。

youdao

Whether you have a very light object or a very heavy satellite, they have the same velocity in orbit if they are at the same distance, and they have the same orbital period.

不论你有个很轻的,物体还是很重的卫星,如果它们距离相同且,在轨道运动时间,相同，则速度一样。

youdao

The satellite itself will orbit around the earth for a period of days.

卫星本身将绕地球轨道运行一段时间。

youdao

To do this the satellite would need to be in a synchronous orbit (one whose orbital period is the same as the period of revolution of the planet underneath), and the descending cable would have to be counterbalanced by an ascending one extending off into space.

ECONOMIST: Space lifts