China has sent a new BeiDou navigation satellite into space.

中国向太空发射了一颗新的北斗导航卫星。

The satellites will help monitor the performance of the global navigation satellite system in real time.

这些卫星将帮助实时监测全球导航卫星系统的性能。

The short message communication services are unique to the BDS, distinguished from other global navigation satellite systems.

短报文服务是北斗卫星系统独有的，有别于其他全球导航卫星系统。

BDS is one of the four global navigation satellite systems in the world, along with GPS, Galileo and GLONASS.

北斗系统是与全球定位系统、伽利略和格洛纳斯并列的全球四大卫星导航系统之一。