定位导航授时 PNT
定位、导航、授时 PNT
定位、导航和授时 PNT
全球华人定位导航协会 CPGPS
车载卫星定位导航系统 GPS
全球卫星定位导航系统 global positioning system
定位、导航与授时 PNT
卫星定位导航体系 global positioning system-gps
导航定位 navigation and positioning ; rtk ; navigation positioning ; navigation and locating system
The paper focuses on how to realize highly efficient mobile position and control management by the combination of GPS position navigation system and the position service, backed up with the existing functions of the second generation mobile telecommunication system,.
全文的重点集中在如何通过第二代移动通讯系统中GSM系统能实现定位服务的现有功能,及GPS定位导航系统相结合,来实现高效的移动定位与调度管理。
参考来源 - 公用移动通讯系统中定位服务实现方法的探讨与实施This paper is focused on the following technologies: embedded development, 3S integration, spatial data collection, mobile computing, wireless communication, GPS positioning and navigation, and the fields of computer science and spatial information science.
论文研究主要涉及嵌入式开发技术、3S集成技术、空间数据采集、移动计算技术、无线通讯技术、GPS定位导航等技术以及计算机科学和空间信息科学等领域。
参考来源 - 基于移动GIS的数据采集系统研究与开发Objective: To approach the feasibility of the three-dimensional positioning and navigation with regular catheter electrodes in intracavitary with a low-frequency electrical field.
目的:探讨基于低频电场方式进行心腔内三维定位导航及心内膜重构的可行性。
参考来源 - 基于低频电场方式实现心腔内三维定位导航及心内膜重构的基础研究·2,447,543篇论文数据，部分数据来源于NoteExpress
现在的定位导航服务将主要由其他六颗卫星提供。
The current navigation and positioning service will mainly be provided by the other six satellites.
因此要提高GPS的定位导航精度，就必须进行电波折射修正。
The radio wave refraction correction for improving the accuracy of GPS navigation and location is necessary.
该上升卫星将跟另外7颗在轨道运行的卫星一起形成全球定位导航服务系统。
The rising star will join seven other satellites already in orbit to form a network which will eventually provide navigation and positioning services around the globe.
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