根據(jù)地鐵線路的特點(diǎn)，給出了地鐵無線調(diào)度通信系統(tǒng)的組成，并對(duì)基于摩托羅拉的TETRA(陸地集群無線電) 系統(tǒng)應(yīng)用做出了具體設(shè)計(jì)，包括系統(tǒng)結(jié)構(gòu)設(shè)計(jì)、隧道場強(qiáng)覆蓋方式的設(shè)計(jì)、射頻信號(hào)放大方式的設(shè)計(jì)。重點(diǎn)介紹了基于IP的TETRA(DIMETRA IP)系統(tǒng)應(yīng)用的設(shè)計(jì)，結(jié)合實(shí)際給出了可靠性設(shè)計(jì)的具體方案。為了更好的適應(yīng)地鐵通信系統(tǒng)發(fā)展，實(shí)現(xiàn)對(duì)DIMETRA IP系統(tǒng)的二次開發(fā)，本文著重介紹CAD服務(wù)器的二次開發(fā)，使其真正滿足地鐵用戶的需求。

　　Abstract:

　　According to the characteristics of subway lines， this article introduced the composition of subway wireless dispatching communication system， and the design based on TETRA system was provided，which included system architecture design， tunnel field coverage design， as well as the design of RF signal amplification. This article mainly introduced the design of DIMETRA IP system application. In order to better adapt to the subway communication system development， DIMETRA IP system realized to the secondary development. This paper mainly introduced the second development of CAD server， and make it truly satisfy subway needs of users.