【摘要】 定位导航授时(PNT)技术能够弥补GNSS信号脆弱等不利影响,综合一切可以应用的PNT信息源实施全空域目标定位、导航与授时服务,因此成为各国研究的重要方向。本文首先详细地介绍了美国PNT体系的发展概况;然后系统总结了未来潜在的PNT技术;最后展望我国PNT体系的发展方向,为我国PNT体系的发展提供参考。更多还原

【Abstract】 Positioning,Navigation and Timing(PNT)technology can make up the adverse effects of GNSS signal vulnerability,and integrate all PNT information sources to implement the whole airspace target PNT service.Therefore,it becomes an important research direction of various countries.This article not only describes the status of USA PNT system in detail,but also summarizes the future potential PNT technology.Moreover,this paper prospects the research directions,which provides a reference for PNT study of our country.更多还原