1.   A new alerting system uses Global Positioning System navigation satellites to monitor the vertical motion of a buoy moored out in the ocean.

2.   The Beidou navigation satellites, named after the Northern Ladle, or Big Dipper in Chinese, sit in an orbit over China.

3.   The navigation satellites can transmit aircraft positions to the ground automatically, so that pilots do not have to tell air traffic controllers where they are.

4.   Building new navigation satellites for the military is the top priority.

5.   Russian Aerospace Agency chief Yuri Koptev has described building new navigation satellites for the military as his top priority.

6.   The navigation satellites were launched on Sunday.

7.   The rocket was carrying a navigation satellite for the Air Force.