摘 要 北斗卫星导航系统作为我国独立自主所研发的导航、 定位、 授时系统, 从2000 年第一代试验系统的建设至今以走过了十几年.他从只有三颗试验卫星的北斗一代发展到现在具有一定区域导航能力的新一代导航定位系统, 北斗因此跻身为全球四大导航系统之一, 到 2012 年将具有亚太区域定位能力, 并将在2020 年左右具备全球覆盖能力。 北斗系统的建设不仅提高了我国自主研发创新能力, 更为我国航空航天事业培养了大批的优秀人才, 必将会进一步推动我国航天航空事业的快速发展。 北斗一代在抗震救灾、 应对突发事件、 及一些重要的赛事安保中都得到了很好的应用, 在国防建设、 海洋开发、 国土监测中都发挥了重大的作用, 相信以后的北斗在国家政策的支持下, 在建设科研人员的共同努力下定将建设的更为强大, 将具备更高的定位、 授时精度, 更好更快的为全国、 全球人民生活生产服务。 关键词: 北斗卫星 导航 定位 全球 服务 系统 1Beidou satellite navigation system Abstract: The Beidou satellite navigation system is a navigation, positioning and time service system which is research and development by China independently. It has taken more than 10 years to construct the first generation test system since 2000.it develops from the first generation of Beidou which only contain three test satellite's to the present new generation navigation positioning system which has area navigation ability. Therefore, the Beidou advances into one of the four navigation systems all of the world. it will have the Asian and Pacific zone positioning ability to 2012 and the coverage ability. The Beidou system's construction not only sharpened independent research and development ability of our country , but also it has trained large quantities of outstanding talents for aerospace industry of our country , which will promote fast development of aerospace industry in our country. Compass generation have been very good in the application in earthquake relief ,emergency response, and the security of some important events, and played a significant role in national defense ,marine development, land monitoring as well, I believe the future of the Big Dipper in the national policy Support, and with the joint efforts of researchers it will be built more powerful ,will have a higher position, timing accuracy ,better and faster services. for the country ,the world's people . Key word: The Beidou satellite navigation positioning the whole word service system 2