China launch again ahead of Space Station and Mars drive NASA Spaceflight

China has launched another navigation satellite, with the BeiDou-2 ‘Compass-IGSO-4′ lofted into orbit by a Long March 3A (Chang Zheng-3A). The launch took place from the LC3 launch complex of the Xi Chang Satellite Launch Center, in Sichuan Province, with lift-off timed at 21:44 UTC – a T-0 slightly delayed due to poor weather in the region.
This range of satellite was developed by the China Academy of Space Technology, based on the DFH-3 satellite platform. Equipped with a phased array antenna used for navigation signals transmission and a laser retroreflector, the satellite’s Navigation Satellite System (CNSS) is China’s second-generation satellite navigation system, capable of providing continuous, real-time passive 3D geo-spatial positioning and speed measurement.