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0引言全球通信网络(Global Communication Networks)的形成使海上通信真正进入海陆一体的数字化通信时代。目前,全球通信网络有如下几个系统:(1)全球中/高频数字通信网(GLN-Global Link Network);(2)全球星通信系统(Globalstar);(3)国际移动卫星通信系统(Inmarsat);
0 Introduction The formation of Global Communication Networks has enabled maritime communications to truly enter the digital communications age of land and sea. At present, there are several systems in the global communications network: (1) GLN-Global Link Network; (2) Globalstar; (3) International Mobile Satellite System Inmarsat);