The China Aerospace Science and Technology Corporation (CASC) is the main contractor for the Chinese space program. It is state-owned and has a number of subordinate entities which design, develop and manufacture a range of spacecraft, launch vehicles, strategic and tactical missile systems, and ground equipment. It was officially established in July 1999 as part of a Chinese government reform drive, having previously been one part of the former China Aerospace Corporation. Various incarnations of the program date back to 1956.
The BeiDou Navigation Satellite System (BDS) is a Chinese satellite navigation system. It consists of two separate satellite constellations â€“ a limited test system that has been operating since 2000, and a full-scale global navigation system that is currently under construction. Beidou-3 are the third generation of navigation satellites which are launched into medium Earth orbit.
The BeiDou Navigation Satellite System is a satellite-based radio navigation system owned and operated by the China National Space Administration. It is one of the global navigation satellite systems that provide geolocation and time information to a BDS receiver anywhere on or near the Earth where there is an unobstructed line of sight to four or more BDS satellites.