2012年11月19日6时53分,我国在太原卫星发射中心用长征二号丙运载火箭,成功将“环境与灾害监测预报小卫星星座”(以下简称“环境减灾星座”)C星送人预定轨道。环境减灾星座是由4颗光学小卫星和4颗雷达小卫星组成的小卫星星座。2008年9月6日,环境减灾星座A, B两颗光学小卫星成功发射,并稳定运行至今。四年来,A, B两颗卫星在我国洪 At 1953 on November 19, 2012, China successfully transmitted the “Small Satellite Constellation for Environment and Disaster Monitoring and Forecasting” (hereinafter referred to as “the constellation of environmental disaster reduction”) with the Long March II C launch vehicle in Taiyuan Satellite Launch Center. C star to the scheduled orbit. Environmental Disaster Reduction Constellation is a small satellite constellation composed of 4 optical small satellites and 4 small radar satellites. On September 6, 2008, two optical small satellites A and B of the Environmental Mitigation Constellation were successfully launched and have been operating steadily since then. In the past four years, A and B have two satellites in our country