Its function is to complete full - duplex asynchronous real - time data transmission , namely sending alarm and orientation data to the host or receiving commands from the host 功能是实现与远程主机双向异步实时数据传输即发送报警和定位数据和接收来自主机的命令。
Based on research of gps , gprs , we gave a design of new system as a whole and the implement of design of terminal on car and transmission way of position data 本文从系统总体设计的角度阐述了基于gprs网络gps监控系统的设计,实现了车辆终端的设计、定位数据的传输等。
Additionally the tracking terminal can transmit messages through both sms ( short message service ) and gprs , and save cost through gprs 此外,该终端能够实现短消息和gprs两种方式传输定位数据。不但保证了数据传输的可靠性,并且通过gprs传输数据可以大大节省数据传输费用。
This thesis is a comprehensive project that focus on monitoring vehicle system , which is composed of electronics , computer and internet . the main idea of this article is to display gps position data on the vector map 本文的主要设计思想是将gps接收机返回的车载定位数据在矢量化电子地图上以位图的形式显示出来，这个位图就代表所要监控的车辆。
In order to obtain the digital base map of the field , different mapping techniques were compared . single point repeat positioning - average and continuously positioning - moving average methods were designed for gps mapping 比较分析了农田电子地图的主要测绘技术，设计了gps测绘中单点重复定位? ?求平均，以及连续定位? ?移动平均等定位数据的处理方法。
Finally , experiment is done via the system designed in this article , form analyzing the theories and the experiment data of the real - time and the reliability of the system , the feasibility of this system is validated 最后，利用文中实现的系统进行了gps车辆定位数据的传输实验，根据理论分析结果与试验结果，对系统的性能(实时性和可靠性)进行了分析，论证了系统的可行性。
With bitmap which stands for vehicle being monitored . this article discuss the producing principle of vector electronic map , making it reality to accomplish the basic operation on map , completing the position data display on map ( that it is , to realize monitoring vehicle ) 在文章中论述了矢量化电子地图的制作原理，实现了矢量化电子地图的基本操作，完成了将定位数据在地图上的显示(即实现了车辆的监控) 。
The working principle of a multi - channel ultrasonic inner inspection pig and the design scheme of its subsystems are introduced , the principle block diagram is presented , and many methods such as synchronous collection and memory of thickness data and orientation data are put forward 介绍了一种多通道超声波内检测功能机的工作原理及其各组成子系统的设计方案，给出了原理框图，同时提出了对壁厚数据和定位数据进行同步采集、存储等方法。
Geographic information system ( gis ) is a database management system for getting , storing , searching , analyzing and displaying spatial data . it consists of most advanced techniques such as graphics , image , geology , geography , remote sensing , surveying , artificial intelligence , computer science and so on . gis is one of the most promising and attractive research fields 地理信息系统( geographicinformationsystem ， gis )是一种为了获取、存储、检索、分析和显示空间定位数据而建立的计算机化的数据库管理系统，它集当代最先进的图形、图像、地质、地理、遥感、测绘、人工智能、计算机科学等技术为一体，是当前研究的热点之一。
With investigation and research done , an overall system of simulated ultrasonic detection for inner pipelines has been worked out . there follows a thoroughly - designed subsystem of on - line data collection , leading to the successful programming of the communication software which can transfer the data of the position as well as the pipeline thickness exactly 给出了模拟式超声管道内检测系统的总体设计与在线数据采集子系统的设计，着重介绍了在线超声测厚数据与定位数据的同步采集处理计算机子系统的研制，该系统已完成工程实验样机研制。
