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卫星导航系统当前技术发展特点综述本文主要分析了卫星导航系统目前在军用、民用的不同需求,由此在不同发展方向上呈现的主要技术特点,并分别简要介绍了全球各国、各地区正在升级、建设发展的卫星导航系统的概况和特点,包括GPS的升级工作和技术特点、WAAS和LAAS等增强系统的特
Summary of current technology development characteristics of satellite navigation system This paper analyzes the main technical characteristics of different present and different needs of military and civil navigation systems in satellite navigation systems, and briefly introduces the countries in the world, regions are upgrading, The development and development of satellite navigation system overview and features, including GPS upgrade and technical features, WAAS and LAAS and other enhanced system of special