基于IP的卫星通信终端设计与实现  

Design and Implementation of IP-based Satellite Multimedia Communication Terminal

作　　者：郄绍辉[1] 杨佳 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081 [2]河北远东通信系统工程有限公司,河北石家庄050200

出　　处：《无线电通信技术》2013年第3期93-96,共4页Radio Communications Technology

摘　　要：为解决地面通信网络与卫星通信的无缝连接问题,设计了一款基于IP的卫星通信终端。该终端由调制解调单元和IP接入单元组成,可以实现卫星通信的全IP传输。终端采用了TCP加速、中频调制解调和LDPC纠错编码等技术,具有路由选择、接入控制、频率可变及速率可变等功能,提高了IP数据在卫星信道传输的效率,有效地解决了地震、水灾等应急情况下卫星通信与地面通信网络互通问题。In order to realize the seamless connectivity between the terrestrial communications network and satellite communication wireless communication,an IP-based satellite communication terminal is designed. The terminal is composed of modem unit and IP access unit, and it can implement all-IP transmission in satellite communication. The terminals use TCP acceleration, 1F modulation and demodulation,LDPC and some other high performance technologies. They have such functions as routing, access and control,variable frequency,variable data rate,etc, and can improve IP data transmission efficiency in satellite communication,and effectively solve the problems occurred in the interoperability between satellite communication and terrestrial communication network in emergency cases.

关 键 词：TCP加速 中频调制解调 LDPC 路由选择 

分 类 号：TN927.21[电子电信—通信与信息系统]