Two clusters of formation flying satellites with a relative angle on geosynchronous earth orbit were used to construct a space-based continuous navigation system for deep space exploration.

介绍了目前各国应用的多种地基和天基空间目标探测与识别系统，并对各系统的性能进行了详细的分析和总结。

youdao

The rocket made its first flight in 2004 and is capable of launching payloads of up to 24 tons into low-Earth orbit and 11 tons toward the geosynchronous orbits used by communications satellites.

重型火箭在2004年进行首次发射，它可以将24吨重的负载发送到低地球轨道，也能将用于通讯卫星的11吨重的载荷送入地球同步轨道。

youdao

This orbit (a high Earth or geosynchronous orbit) means that the satellite will always be directly over the same point on Earth, ensuring a continuous view of the ground.

这条轨道(高地同步轨道)意味着这些卫星总是位于地球上的某点之上，保证对地的持续观察。

youdao

And an optical mission to test laser relay capabilities from earth geosynchronous (GEO) orbit will soon follow.

FORBES: Future Of NASA's Aging Deep Space Network Lies In X-Rays And Lasers

It passed far closer even than the geosynchronous satellites that orbit the Earth, but there was no risk of impacts or collisions.

BBC: Asteroid 2012 DA14 in record-breaking Earth pass

By launching closer to the equator, the rocket receives a bigger boost from the Earth's rotation, meaning it can lift nearly double the mass of a normal Baikonur payload - a maximum of three tonnes, as opposed to 1.7 tonnes, into a geosynchronous orbit 36, 000km above the Earth.

BBC: A rocket abroad - Soyuz in French Guiana