Terminal based on TETRA digital trunking mobile communication system could send and receive status and short data service message, and achieve navigation and location through short data service.
基于TETRA数字集群移动通信系统开发的TETRA终端，通过数据业务可以发送和接收状态消息和短数据业务消息，利用短数据业务完成终端导航定位功能。
The characteristics, function, structure and principle of the BeiDou Dual-Satellite Navigation System are described, and the limitation of the BeiDou's active location in application is discussed.
介绍了北斗双星定位系统的特点、功能、系统组成和工作原理，说明了北斗有源定位方式在应用方面的局限性。
The vehicle and the road together, is to design intelligent vehicle location and navigation system needs to simulate the direction of implementation.
将车辆与道路融合在一起，是设计智能车辆定位导航系统需要模拟实现的方向。
A passive location algorithm for the integrated navigation system of Beidou and inertial navigation system (INS) was put forward in this paper.
提出了一种北斗卫星定位系统和惯性导航系统的组合导航无源定位算法。
Based ITS Intelligent Vehicle location and navigation system could be divided into three levels: autonomous navigation systems, communications systems and two-way one-way communication system.
基于ITS的智能车辆定位导航系统可划分为三个层次：自主导航系统、单向通信系统和双向通信系统。
This paper establishes a new shipboard gun's firing calibration model which based on shipboard navigation system, obtains the initial and final worship-location directly by navigation system.
将舰载导航系统引入舰炮校射，利用舰载组合导航系统直接测得发射时刻和偏差测好时刻的发射舰位置，从而建立校射模型。
Enforced position location reporting system (EPLRS) is a tactic system that integrates communication, navigation and identification functions.
增强型定位报告系统(EPLRS)是集通信、导航定位、识别于一体的综合性战术系统。
The automobile navigation system is an important part in this design. This paper investigates GPS location, GIS navigation and description methods and data structure of navigation electronic map.
车载导航系统是本设计的重要功能组成部分，本文深入讨论了车载定位导航技术的理论基础：全球定位系统GPS与地理信息系统GIS，以及电子地图的表达方式和数据结构。
A novel vehicle location and navigation system prototype is implemented in this thesis after analysing current vehicle location and navigation systems.
本课题在分析国内外同类车载导航系统的基础上，设计并实现了一款车载导航系统的产品原型。
A novel vehicle location and navigation system prototype is implemented in this thesis after analysing current vehicle location and navigation systems.
本课题在分析国内外同类车载导航系统的基础上，设计并实现了一款车载导航系统的产品原型。
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