One of the important factors affecting the accuracy of two-way satellite time and frequency transfer (TWSTFT) is the satellite motion.

影响双向卫星时间频率比对(TWSTFT)准确度的一个重要因素是卫星的运动。

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There are two primary methods of time dissemination around the world: two-way satellite time transfer_(TWSTT) and common-view Global Position System_(GPS) time transfer.

现行的高精度远距离时间传递方式主要有GPS共视法和双向卫星时间传递技术（TWSTT）。

youdao

There are two primary methods of time dissemination around the world: two-way satellite time transfer_(TWSTT) and common-view Global Position System_(GPS) time transfer.

现行的高精度远距离时间传递方式主要有GPS共视法和双向卫星时间传递技术（TWSTT）。

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