GPS及其在移动指挥控制系统的开发

全球定位系统，又称GPS，是新一代的导航定位系统。它能够为全球任意地点、任意多个用户同时提供高精度的、全天候的、连续的、实时的三维定位、三维测速和时间基准。由于这一体系在定位、导航、测速、授时等方面的高效率。高精度，因此它在测绘和导航方面具有广泛的应用。文章首先介绍了全球定位系统的概况，讲述了全球定位系统的原理；然后，介绍了应用于民用移动定位的MC2S（移动指挥控制系统）的框架，并着重介绍了GPS信息接收部分模块的详细设计过程。最后，文章指出了系统的改进之处和发展方向。

GPS and Development of MC2S(Mobile Command & Control System)

Global Positioning System,also called GPS,is a new generation of navigation positioning system. It can provide many users at discretion of any place in the world high definition, all -weather, continuous and real-time three-dimension allocation, three-dimension velocity measurement and time baseline at the same time. Since the high efficiency,high precision of this system,it is applied widely in the plotting and navigahon. In this paPer,we first introduce thesummary of GPS,then present MC2S (Mobile Command & Control System),which is applied in civil mobile positioningsystem,and emphasize in procedure of GPS receiving part module in detail. At last,the paper points out shortcomingsof current system and direction of development.