论文部分内容阅读
7月27日5时44分,我国用“长征三号甲”运载火箭,成功将第九颗北斗导航卫星送入太空预定转移轨道。北斗卫星导航系统是中国自行研制开发的全球卫星导航系统,是除美国的全球定位系统(GPS)、俄罗斯的“格洛纳斯”和欧盟的“伽利略”之后第四个成熟的系统。
At 5:44 on July 27, our country succeeded in sending the Ninth Beidou Navigation Satellite into the scheduled orbit for space transfer using the launch vehicle “Long March III A”. The Beidou satellite navigation system is a global satellite navigation system developed and developed by China itself and is the fourth mature after the United States’ global positioning system (GPS), Russia’s “GLONASS” and the EU’s “Galileo” system.