论文部分内容阅读
一、卫星通信的发展早在四十年代中期就有人对卫星通信的可能性问题提出了设想,并加以研究,但真正的发展还是六十年代的事情。从1958年底发射成功第一颗通信实验卫星到正式付诸应用,经过了七年的发展。卫星通信技术的诞生,打开了“远距离、大容量”通信的新局面,并首次实现了洲际传送电视节目,引起了现代通信体系的重大变革。在此期间,以美国为首成立了国
First, the development of satellite communications As early as the mid-1940s, some people put forward the idea of the possibility of satellite communications and studied it, but the real development is still the sixties. The successful launching of the first communications experimental satellite from the end of 1958 was officially put into application and after seven years of development. The birth of satellite communications technology opened the door to a new situation of “long-distance, high-capacity” communications and for the first time realized the transmission of television programs across the continent, arousing major changes in the modern communications system. During this period, the United States led the establishment of a nation