(1.裝備學院 裝備指揮系，北京 101416；2.裝備學院 訓練部，北京 101416)
摘      要  為滿足國內專業市場高端用戶的需求，特別是海上遠洋公司各船隊之間、船隊與陸上總部之間、新聞采訪單位、政府應急部門與指揮中心之間的即時通信需求，針對目前國內尚無基于衛星信道的即時通信產品這一現實問題，本文基于第四代海事衛星系統開展企業級即時通信技術研究，設計并開發基于海事衛星信道的企業級即時通信系統，為海事衛星系統的業務增值提供系統支持。
　　關  鍵  詞  即時通信  企業級即時通信  海事衛星   P2P

                                  The design and implementation of enterprise-class instant

                                             messaging system based  maritime satellite

                                                         DU Gang1，WANG Jinmiao2
     （1.Department of Equipment Command，Equipment Academy，Beijing 101416，China；
                 2. Training Department，Equipment Academy，Beijing 101416，China）
Abstract  This paper aim at the practical problem for no native instant satellite channels based messaging products, especially for the instant messaging and service value-added demands between the fleet of ocean shipping company, between fleet and headquarter on the road, between news gathering unit and command center, between government emergency services and command center, carry out research of key technology of instant messaging system, independently develop the Maritime satellite network environment based Enterprise-class instant messaging system.
Key words  instant messaging  enterprise instant messaging  maritime satellite  peer to peer

                                          參考文獻（References）
[1] Dreamtech.即時消息傳遞系統編程源代碼解析[M].北京:電子工業出版社,2002.
[2] 喬嘉.基于SIP協議的即時通訊系統的研究及實現[D].北京:北京郵電大學,2006.
[3] 王素紅,常悅.基于P2P網絡的即時通信系統研究[J].長春理工大學學報,2008(4):657-659.
[4] 任艷玲.中國即時通信定位差異化趨勢分析[J].河北工業科技,2009,26(1):5-7.
[5] 黃榮升.一種基于擴展SIP協議的即時通信系統設計與實現[J].現代電子技術,2006(11):56-58