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随着世界经济不断向着多元化发展,各国间、各企事业间、各部门间、各种人员间的交流、合作愈加频繁,形成了相互联系、相互依存、促进和协作发展的关系,通信联络便成为人类日常生活中密不可分的一部分。不同的环境可选择不同的联络方式,在家中、办公室中可选择公司电话网(PSTN)、公用数据网(PSDN),在出行中可采用蜂窝电话、寻呼机、无线对讲机、短波、超短波及卫星通信等手段。 在多种通信手段中,卫星通信是目前发展的热点之一。卫星通信有覆盖范围广、发展快、相对投资少
As the world economy continues to develop in a diversified manner, the exchanges and cooperation among various countries, enterprises, departments and various personnel have become more frequent and more frequent, forming a relationship of interdependence, interdependence, promotion and coordinated development, and communication and liaison It has become an inseparable part of human daily life. Different environments can choose different ways of contact, at home, the office can choose the company’s telephone network (PSTN), public data network (PSDN), in the travel can be cellular phones, pagers, wireless walkie-talkies, shortwave, ultrashort wave and satellite communications And other means. Among various means of communication, satellite communication is one of the hot spots in development at present. Satellite communications cover a wide range of rapid development, the relative investment less