China launches 4 InSAR satellites and new Yaogan reconnaissance sat

China conducted a pair of launches across Thursday and Friday, sending interferometric synthetic aperture radar and reconnaissance satellites in orbit. A Long March 2D rocket lifted off from Taiyuan Satellite Launch Center at 6:50 a.m. Eastern, March 30, carrying four PIESAT-1 constellation satellites. The satellites are named PIESAT-1 (A-01) and PIESAT-1-B (01 through 03). The four X-band interferometric synthetic aperture radar (InSAR) satellites will orbit in a hub and spoke formation, with PIESAT-1 (A-01) as the hub. More

(Source: SpaceNews - Apr 2)