Description: 近几年来，全球通信技术的发展日新月异，尤其是无线通信技术的发展速度与应用领域已经超过了固定通信技术，呈现出如火如荼的发展态势。它具有无需架设传输线、网络部署迅速便捷、运行可靠和调试简单等优点。其中最具代表性的蜂窝移动通信技术，使人们可以随时随地实现语音通信、短信息传输等。但对于中短距离的自动化数据采集系统、计算机遥测遥控系统、车辆监控系统、小区智能管理和矿工定位等领域，移动通信系统的安装、运行成本是比较高的，因此笔者给出了一种低成本、具有短信息和语音传输功能的无线监控系统设计方案-In recent years, global communications technology is advancing rapidly, In particular, wireless communications technology development and application rate has exceeded the fixed communications technologies, showing the development trend in full swing. It is not set up transmission lines, the network quickly and easily deployed, reliable and simple debugging advantages. One of the most representative of the cellular mobile communication technology, it makes people realize voice communication anywhere, short message transmission. But for short distance from the automated data collection system, the computer remote monitoring and control systems, vehicle monitoring system, Intelligent Management Area miners and positioning, and other fields, mobile communication system for the installation, o Platform: |
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Author:jake |
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Description: 移动网络的混合定位技术及其实现.是一篇好文章,大家好好看看.希望大家多多交流:gis_boy@hotmail.com-hybrid mobile network positioning technology and its implementation. Is a good article, everyone a good look. I hope Members can exchange : gis_boy@hotmail.com Platform: |
Size: 124928 |
Author:陈财 |
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Description: 近几年来，全球通信技术的发展日新月异，尤其是无线通信技术的发展速度与应用领域已经超过了固定通信技术，呈现出如火如荼的发展态势。它具有无需架设传输线、网络部署迅速便捷、运行可靠和调试简单等优点。其中最具代表性的蜂窝移动通信技术，使人们可以随时随地实现语音通信、短信息传输等。但对于中短距离的自动化数据采集系统、计算机遥测遥控系统、车辆监控系统、小区智能管理和矿工定位等领域，移动通信系统的安装、运行成本是比较高的，因此笔者给出了一种低成本、具有短信息和语音传输功能的无线监控系统设计方案-In recent years, global communications technology is advancing rapidly, In particular, wireless communications technology development and application rate has exceeded the fixed communications technologies, showing the development trend in full swing. It is not set up transmission lines, the network quickly and easily deployed, reliable and simple debugging advantages. One of the most representative of the cellular mobile communication technology, it makes people realize voice communication anywhere, short message transmission. But for short distance from the automated data collection system, the computer remote monitoring and control systems, vehicle monitoring system, Intelligent Management Area miners and positioning, and other fields, mobile communication system for the installation, o Platform: |
Size: 164864 |
Author:jake |
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Description: 随着电子商务技术和网络技术的快速发展，现代物流技术也在不断进步。物流技术是指与物流要素活动有关的所有专业技术的总称，包括各种操作方法、管理技能等，如流通加工技术、物品包装技术、物品标识技术、物品实时跟踪技术，物流存储技术等；物流技术还包括物流规划、物流评价、物流设计、物流策略等；当计算机网络技术的应用普及后，物流技术中综合了许多现代技术如GIS（地理信息系统）、GPS（全球卫星定位）、EDI（电子数据交换）、BAR CODE（条码）等。物流业在采用某些现代信息技术方面的成功经验和规范集成，为电子商务的推广普及铺平了道路。例如世界零售业巨头美国沃尔玛早已采用GPS进行物流跟踪和监控来保证商品及时、可靠、安全的到达各个销售地点。-As the e-business and network technology to the rapid development，the modern logistics technology has been steadily progressing. Logistics is the logistics’s elements and related to the activities of all professional and technical customers, including various methods of operation, Management skills, such as flow-processing technology, packaging technology goods, goods identification technology, real-time tracking technology items, Logistics Storage Technology Logistics Technology also include logistics planning, logistics evaluation, logistics design, logistics strategies When Computer Network Technology Application widespread, integrated logistics technology many modern technologies such as GIS (geographic information systems), GPS (global positioning satellite), EDI (electronic data interchange), BAR CODE (bar code). In the logistics industry to adopt certain aspects of modern informat Platform: |
Size: 808960 |
Author:沈飞 |
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Description: 随着计算机和电子通讯技术的飞速发展和网络应用的深化，网络版的投票评选在活动中的方便性和重要性，目前系统定位于投票评选行业的量身开发，打造行业的领先服务评选品牌，系统整合单选/多选一体化功能,分类模块独立投票使用，并适合图文评选,本系统定位品牌，选秀，活动，政府，公安，年度评选等相关活动。新增URL传送加密，问题验证，防外链接功，代理IP检测加强功能，时间效验功能等，更多功能请使用商业版。-With the deepening of the rapid development of computer and electronic communication technologies and network applications, the convenience of the online version voted in the activity and importance, the current system located in the voted industry tailor development to create the brand of the industry s leading service selectionthe integrated radio/multiple choice integration features, the classification module vote independently, and is suitable for text selection, brand positioning, draft, activities, government, public security, the annual selection of this system-related activities. Add URL to send encrypted, the problem verification, anti-outer link function, the proxy IP detection enhancements, time-tested function and so on, more features, please use the commercial version. Platform: |
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Author:沉降 |
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Description: 定位技术是无线传感器网络中关键的基础支撑技术, 目前提出了许多静态网络的节点定位算
法, 移动无线传感器网络的定位研究相对较少. 针对定位节点和参考节点随机运动的网络模型, 提出了
一个基于动态网格划分的蒙特卡罗定位算法. 算法中当接收的参考节点数超过一定阈值时使用最远距
离节点选择模型, 选出部分参考节点参与定位和信息转发, 节约能耗. 接着基于选择的或所有接收的参
考节点构建采样区域, 进行网格划分, 使用网格单元数计算最大采样次数, 在采样区域内采样并使用误
差补偿的运动模型进行过滤, 提高了采样效率, 减少了计算开销, 并保证了较好的定位精度. 仿真实验表
明算法在定位精度, 计算开销、能耗等方面都具有较好的性能.-Positioning technology is critical in wireless sensor networks based supporting technologies, currently made many static network node localization algorithms, the positioning of mobile wireless sensor network research is relatively small. Locate node and a reference node for random motion network model, proposed a Dynamic meshing based Monte Carlo localization algorithm. algorithm when the received reference nodes exceeds a certain threshold, the most distant node selection model selects some reference nodes involved locating and forwarding information, save energy. then based on the selection or building all received reference node sampling area, meshing, the number of grid cells used to calculate the maximum sampling frequency, the sampling area sampling and using motion model error compensation filter to improve sampling efficiency, reducing the computational overhead and to ensure a better positioning accuracy. Simulation experiments show that the algorithm in positioning accuracy, Platform: |
Size: 576512 |
Author:Jeff |
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