微PNT与综合PNT

Micro-PNT and Comprehensive PNT

综合定位导航授时是后GNSS(全球卫星导航系统)发展的必然趋势。本文侧重梳理微PNT发展需求和发展现状,分析与之关联的核心关键技术,论述综合PNT与微PNT的关系。强调综合PNT需要大量基础设施投入与建设,而微PNT侧重高技术传感器的集成应用。与现有文献思路不同的是,我们认为,为了实现各类传感器PNT输出结果的坐标基准统一和时间尺度一致,微PNT应包含多模GNSS和芯片级惯性导航和芯片级原子钟等定位定时组件,微PNT强调小型化、个性化、组合化服务终端;微PNT除各PNT组件的小型化外,还包括各组件的深度集成,各类数据的自适应融合和各组件的自主标校;当然,微PNT也强调各传感器信息的时空基准的统一。

Comprehensive or integrated positioning,navigation and timing is an obvious developing trend following the global navigation satellite system.This paper summarizes the current status of micro-PNT and its developing requirements.The related key technologies are described and the relationship between comprehensive PNT and micro-PNT is analyzed.It is stressed that the comprehensive PNT needs massive infrastructure construction and investment,however,the micro-PNT aims at the integrated applications of high-tech micro sensors.It is different from the current opinions appeared in the literatures,micro-PNT should include multi GNSS integration and micro components of navigation and timing in order to make the PNT outputs refer to a unified coordinate datum and time scale.Micro-PNT focuses on the personalized micro terminal applications.Except for the miniaturization of each PNT component,micro-PNT aims at the deep integration of the micro sensors,adaptive data fusion and self calibration of each component.