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2011年12月27日北斗卫星导航系统正式提供试运行服务,在系统试运行一年之际,国务院新闻办公室2012年12月27日上午10时举行新闻发布会,北斗卫星导航系统新闻发言人、中国卫星导航系统管理办公室主任冉承其宣布,北斗卫星导航系统当日正式提供区域服务,并介绍了北斗卫星导航系统有关情况。同时,正式公布了中、英文两种版本的北斗系统空间信号接口控制文件(ICD)正式版。发布会上,冉承其与中国卫星导航定位应用管理中心主任杨宝峰,中国
On December 27, 2011, Beidou satellite navigation system officially provided trial operation service. At the one-year trial run of the system, the Information Office of the State Council held a press conference at 10:00 on December 27, 2012, the spokesman of Beidou Satellite Navigation System, Ran Chengqi, director of China’s satellite navigation system management office, announced that Beidou satellite navigation system officially provided regional services on the same day and introduced the situation of the Beidou satellite navigation system. Meanwhile, the official version of Beidou System Space Signal Interface Control File (ICD) in both Chinese and English versions was officially announced. Conference, Ran Cheng-qi and China satellite navigation and positioning application management center director Yang Baofeng, China