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本文对GPS与GIS的集成方式、GPS信号的解析、地图匹配、最短路径算法进行了研究,通过GPRS(通用分组无线业务)信息的传输实现监控中心与车辆之间的无线通信和信息交互,来实现车辆导航监控。 相似文献
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物流配送作为物流产业的核心进程,其效率的高低直接影响整个物流业的发展,而车辆调度的智能化发展已成必然趋势。将GPS、GIS和GPRS技术集成应用于智慧物流车辆调度系统的实现中,能有效地对物流车辆进行动态调度,在车辆配送途中监控其状态并实现实时指挥调度。 相似文献
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提出了基于B/S架构的WebGIS城市车辆指挥调度系统框架,综合利用了GPS、GPRS等技术,实现了对城市车辆的指挥调度功能。 相似文献
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基于移动设备的定位跟踪系统及其实现 总被引:1,自引:0,他引:1
利用Android移动平台和百度地图API,开发了基于B/S架构的移动设备定位跟踪系统。该系统利用移动设备内置GPS芯片采集定位数据,再通过GPRS无线网络通信传输至服务器,并在浏览器端实现对移动设备的实时定位跟踪。系统运行稳定,定位快速准确,为GPS服务于信息化管理提供了一种低成本解决方案。 相似文献
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基于GPRS/GPS/GIS的车辆导航与监控系统 总被引:53,自引:3,他引:50
引入一种基于GPRS/GPS/GIS的车辆导航监控系统,系统具有车上进行自主导航,车下进行监控的特点.系统采用GPRS作为通信手段,不但减少运营费用,而且方便用户直接参与.对车辆导航监控系统的组成、关键技术进行阐述,最后对系统的实现情况进行介绍. 相似文献
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为了提高煤层气生产数据采集效率,达到人员调度的使捷,设计实现了煤层气田智能巡检WebGIS系统。系统融合了GPRS、GPS、GIS等技术,采用B/S和M/S相结合的体系架构,在移动终端结合ArcGISMobile,实现GPS数据解析和定位导航;利用Silverlight技术构建监控室WebGIS,将改进的蚁群算法应用于路径规划,通过GPRS技术实现巡检数据和巡检任务等信息的无线实时传输,基本实现巡检工作的智能化、实时化。 相似文献
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随着无线通信技术、地理信息技术和GPS定位技术的发展以及当前社会经济发展的需要,GPS车辆定位监控系统已在智能交通、物流管理及特种车辆的监控调度等方面得到了广泛应用,并且带来了很大的经济效益和社会效益.随着嵌入式技术的不断研究和发展,嵌入式技术已应用到很多方面,其技术变得越来越成熟,其成本在不断降低.本文通过对GPRS特点简介,对GPRS车载定位网络服务系统结构及嵌入式GPS/GPRS车载定位的关键技术进行了研究. 相似文献
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畜禽废弃物集运车自动监控回报地理信息系统之开发 总被引:1,自引:0,他引:1
本研究能藉由装置于畜禽废弃物集运车之重量感测系统(Weighing System,WS)及全球卫星定位系统(Global Positioning System,GPS),经由全球行动无线通讯系统(Global System for Mobile Communication,GSM)全天候将集运车上畜禽废弃物载重变化及其位置,实时传回监控中心之地理信息系统(Geographic Information System,Gis)与数据库服务器中,再利用网络地图服务器经因特网(Intemet)随时提供客户端上网浏览查询与监控集运车可能不当流用之行为。本系统着重以重量变化信息作为监控端参考的重要依据,再配合车辆定位信息以核对畜禽废弃物卸载地点与重量而掌控不当流用之明确证据。另考虑集运车司机可能利用下班时间进行违法行为,监控人员无法全天侯监控,本研究系统增加集运车于非上班时间发生异常状况时,以简讯(Short Message)及电子邮件(E-mail)型式传送至预设监控者手机或远程计算机内或在提供监控者于下班时间直接透过因特网浏览器监控之功能,以及藉由远程操控软件(Symantec PC Anywhere)透过远程计算机进入监控中心做不定时的查询监视。另外,本系统透过手持式输入设备,将清运司机所输入毙死畜禽数量信息传送到GSM/GPRS(General Packet Radio Service)模块,并发送回监控端,其监控人员可透过因特网浏览接口,了解集运车辆实时清运数量、重量与路线位置之关系,以确实达到集运车辆控管之目的。 相似文献
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概要介绍了基于GSM/GPRS-GPS移动位置信息服务平台接口的软硬件设计,以Motorola G18模块为例,重点介绍了基于NMEA-0183协议的GPS数据接口技术和基于GSM的TEXT和PDU模式下的短消息和GPRS通讯接口技术。 相似文献
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The EGNOS service will provide better positioning availability and accuracy than that from the standalone GPS solutions. However,
in order to access the EGNOS service, the end user needs to access the corresponding GEO satellites that broadcast the augmentation
information for the region. This is not a problem normally for aviation and maritime applications because an open sky is always
available for such applications. However, an open sky is not always available for land applications because of the obstacles
in the vicinity of the end users, for example, in the city canyons. The situation gets worse for the regions at high latitudes
because the elevation angles to the GEO satellites are rather low (e.g. 4–22° in Finland). This article describes briefly
the SISNeT technology, designed and developed by the European Space Agency, which allows accessing the EGNOS SIS via the Internet.
It will describe in detail the handheld SISNeT receiver, designed and developed by the Finnish Geodetic Institute under ESA
contract. The SISNeT data server is an IP-based server that acquires the EGNOS messages from an EGNOS receiver, and broadcasts
them over the Internet in real-time. The handheld receiver consists of a GPS PC-card receiver, a GPRS (or GSM) card phone,
and a pocket PC as the host platform. The receiver software is a Windows CE-based package with a multi-process and multi-thread
architecture. It simultaneously receives: (1) the EGNOS SIS over a GPRS wireless connection and the Internet and (2) the NMEA
messages from a serial connection to a GPS receiver. It decompresses and decodes the EGNOS messages, and utilizes the information
in the messages to estimate the EGNOS-corrected coordinates, which are finally delivered to the end user via a virtual COM
port. The virtual COM port has been implemented as a stream interface driver in the Pocket PC. It can be accessed in the same
way as the physical COM port in a GPS receiver is accessed. Therefore, it is easy to interface to any third-party applications.
The test results show that the handheld SISNeT receiver can provide a positioning accuracy of about 1–2 m for the horizontal
components, and 2–3 m for the vertical component in real time. Due to the poor performance of the wireless connection, 10–30%
of the EGNOS messages can be lost depending on the services provided by the wireless network operators. The impact of the
messages lost on the positioning accuracy is about 0.5 m in both the horizontal and vertical components.
Electronic Publication 相似文献