文中介绍为了在有扰信道中提供可靠数据传输服务，通信网关在应用层使用经过改良的连续ARQ协议机制实现数据重传。
In order to provide reliable data transmission service on disturbed channels, a modified Go-Back-N ARQ protocol is used to retransmit data by a communication gateway.
由于对流层散射信道存在严重的衰落现象，故而传统的锁相环机制在散射通信中往往难以奏效。
Because of the fading characteristic in troposcatter channel, the mechanism of traditional phase locked loop is difficult to achieve the effect in troposcatter communication.
由于卫星通信信道长，传输距离远，电波要穿过对流层和电离层，易使信号衰减，引入噪声，造成误码。
Due to satellite communication's long channel, far distance transmission and its wave through troposphere and ionosphere often brings the signal deamplification, noise and wrong code.
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