Second, from the use of the technology , it discusses detailedly the three-tier structure, J2EE framework, GPRS communications, GPS positioning, enterprise portal, network , security , and so on.
其次从系统建设所用到的技术入手，对三层架构、J2EE框架、GPRS通讯、GPS定位、企业门户网站、网络与安全等方面进行了详细探讨。
GPS network system is an advanced one which combines with GPS positioning, computer and communication technology.
GPS网络系统是集gps定位技术、计算机技术、通信技术于一身的高科技系统。
And node localization technology is one of the main supporting technologies in a wireless sensor network. The correct positioning of the node itself is the premise of providing monitoring information.
而节点定位技术是无线传感器网络的主要支撑技术之一，节点自身的正确定位是提供监测信息的前提。
Node-Positioning technology of sensor is the basis of the whole wireless sensor network.
传感器节点定位是整个无线传感器网络的基础。
Node-Positioning technology of sensor is the basis of the whole wireless sensor network.
传感器节点定位是整个无线传感器网络的基础。
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