Long March 3B

China launched the capstone satellite for the Beidou navigation constellation Tuesday, adding the final piece to a global network to rival the U.S. military’s GPS fleet providing positioning, timing, and search and rescue services.

Ground crews at the Xichang launch center in China postponed the launch of a Long March 3B rocket into orbit Tuesday that was to complete the deployment of the Beidou navigation fleet, a project approved by the Chinese government in 1994 to end reliance on the U.S. military’s GPS network.