TETRA数字集群系统端到端保密通信的实现_技术文章_国防科技网 关键词： 数字集群系统；保密通信；密钥管理 [gap=379]Key words: digital trunked system; encrypted communication; key management
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电气化铁道 关键词： 数字集群系统；构成；特点；功能 [gap=613]Keyword： Digital clustered communication system; constitution; characteristic; function
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GoTa数字集群系统 GoTa digital trunking system
数字集群无线电系统 TETRA
数字集群通信系统 GOTA ; digital trunked communication system
数字集群移动通信系统 digital trunking communication
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因此，开发具有自主知识产权的TETRA数字集群系统设备具有实际意义。
Therefore, it has practical significance to develop TETRA digital trunked system equipment which has independent intellectual property rights.
数字集群系统的参数设计和网络负荷对分组数据业务的延迟具有很大的影响。
In digital trunked system, the delay performance of packet data service is greatly affected by the design of system's parameters and the network load.
在电信中心办公室和交换中心安装工机电，模拟和数字集群系统，电路和设备。
Install electromechanical, analog and digital trunking systems, circuits and equipment in telecommunications central offices and switching centres.
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