Intelligent transportation system ( lts ) , such as automatic traffic signal controll system , gloabal position system ( gps ) , navigation system , intelligence yaffle monitor system , intelligent residential area management system , plays a increasingly important role in the management of transportation 交通信号自动控制系统、 gps车辆定位及导航系统、智能交通监控系统、智能小区管理系统等智能交通系统( intellingenttransportationsystem ( its ) )在交通管理中日益发挥重要作用。
This paper , reviews the development history of autonomous navigation system - navistar 2001 , and illustrated that it has great importance to the modernization of traffic of our country to research and develop self - designed navigation system . at the same time , this paper give the prototype of navigation system navi - star2001 as a example and discusses specially several aspest of the research and development : 1 . the structure design and module function assignmeng of the system ; 2 . the realiztion method of the module mapdisplay , routecalculate and routeguide ; 3 . the design of properly structured data storage structure which can reflect the complex road network in reality ; 4 同时，本文还以自主式导航系统原型navi - star2001为例子，重点论述了我们在进行navi - star2001开发过程中所作的下面几个工作： 1 、 navi - star2001的系统结构设计及模块划分，各模块的功能分配，这部分工作从整体上对自主式导航系统进行了规划，对于自主式导航系统这样复杂系统的开发工作来说，具有重要意义； 2 、地图显示、路径规划、路径引导的实现方法、关键技术； 3 、设计一个结构合理，能够准确反映真实道路网络的数据存储结构，按照这个存储结构组织起来的道路网数据构成了系统中导航功能的数据基础； 4 、设计车辆定位模块中的道路分块索引技术、 gps数据的接收处理方法及三段式道路匹配算法，这三部分紧密配合实现了移动车辆实时准确的定位。
Secondly , the dissertation also researches the hardware composing of the system , involving the operational principle and technic guide line of superstar gps receiver , gsm - jd1 modem and rs - 232 serial port . based on the research , the gps location data transmitting software and the monitor center software of the gsm based gps vehicle location and navigation system designed in this article , is designed by the computer communication technology , serial communication technique and vc + + 7 . 0 integrated developing environment , and the system with its constitute parts are realized 在对文中设计的基于gsm的gps车辆定位导航系统中采取的superstargps接收机、 gsm - jd1调制解调模块和rs - 232串行接口等硬件的原理和技术指标进行深入研究的基础上，利用计算机通信技术、串行通信技术、 gsm短消息数据传输技术以及vc + + 7 . 0集成开发环境设计出了系统的车辆定位数据发送软件包和车辆监控软件包，实现了系统及其各组成部分的功能。
This dissertation is mainly to design and realize a gsm based gps vehicle location and navigation system , which based on the study of the applications of gps in the vehicle location and navigation system and the applications of gsm mobile communication system , and to discuss the feasibility about the system by experiment 本文围绕这一焦点问题，在对gps车辆定位技术和gsm移动通信技术进行充分研究的基础上，设计与实现了一个基于gsm的gps的车辆定位导航系统，并通过实验对其进行了可行性分析。
Vehicle navigation system can be divided into four functional subsystems : digital map database management subsystem , vehicle positioning subsystem , route planning subsystem , and route guidance subsystem , as well as wireless communications subsystem . the functions which each subsystem should be realized as well as the key technologies to ensure the realization of these functions are proposed 将车辆导航系统划分为路网数据库管理、车辆定位、路线优化、路线引导四大功能子系统以及无线通信子系统，提出了各个子系统应实现的功能，以及实现其功能需要采用的关键技术。
Two methods have been proposed and applied : setting up error model by time series analyzing , displaying vehicle tract by map matching . digital map and software for the paper have been designed by gis tool and high language , software can receive nmea sentence , process gps data and display the vehicle track on the digital map 论文根据车辆定位系统的功能要求设计了软件系统，实现了在计算机上接收gps接收机输出，对原始gps数据进行处理和输出；采用gis开发工具设计了数字地图，设计多个图层，建立路段数据库，应用投影匹配方法将车辆位置轨迹显示在数字地图上。
