SATCOM (Satellite Communication),characterized by its stable and reliable link,wide coverage and long communication distance,now becomes an important communication means in civil aviation.INMARSAT (International Maritime Satellite Organization),founded in 1979,is the only SATCOM provider of global maritime,air/land of commercial and distress safety service.INMARSAT's SBB (SwiftBroadband) aviation services could provide voice,fax,data communications and other businesses for civilian aircraft,with maximum transmission rate of up to 432 kb/s per channel.SBB-Safety service,based on SBB,and together with Classic Aero,HF communications and VHF communication,can be used for ACARS data transmission of high-level security,and the transmission rate has a great improvement as compared with original ones.%卫星通信(SATCOM)具有链路稳定可靠、覆盖范围大、通信距离远的特点,是民用航空领域重要的的通信手段之一.Inmarsat(国际海事卫星组织)成立于1979年,是唯一的全球海上、空中和陆地商用及遇险安全卫星移动通信服务的提供者.Inmarsat的SwiftBroadband(以下简称SBB)航空服务,可为民航飞机提供语音、传真、数据通信等业务,每通道最大传输速率达432 kb/s.在SBB基础上推出的SBB-Safety服务,同原有卫星通信中的Classic Aero服务、高频通信(HF)和甚高频通信(VHF)一起,可用于传输前舱高安全级别的ACARS数据,且极大地提高了传输速率.
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