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广播电视卫星以地面电视台无可比拟的优越性,吸引着各国政府和广大的电视观众,近几年来,世界各国纷纷发射试验广播电视卫星或者广播电视卫星。1974年,美国最早发射了“应用技术卫星——6”,进行多频段的电视广播试验;加拿大于1976年发射了“通信技术卫星”,用12,000兆赫频段进行电视广播试验;日本于1978年也发射了试验广播电视卫星;印度利用美国的“应用技术卫星——6”,进行了为期一年的教育电视广播试验;苏联发射“荧光屏”静止通信卫星,实际上是一颗实用的广播电视卫星,它使全国特别是西伯利亚及远东地区的电视信号覆盖问题,得到了解决。没有发射广播电视卫星的国家也纷纷制定计划,或者购买,或者自己研制。如千岛之国的印度尼西亚,狭长如带的智利,南亚各国以及国土毗邻的西欧各国,都准备发射广播电视卫星。德国和法国合制的广播电视卫星“交响乐”,将于1983年投入使用。“广播电视卫星热”已在世界范围形成。
Radio and television satellites are superior to terrestrial television stations and attract governments and broad audiences. In recent years, all countries in the world have launched experimental radio and television or radio and television satellites. In 1974, the United States first launched “Applied Technology Satellite-6” to conduct multi-band television broadcasting trials. Canada launched the “Communications Satellite of Technology” in 1976 and conducted television broadcasting trials in the 12,000 MHz frequency band. Japan also announced in 1978 Launched a pilot radio and television satellite; India conducted a one-year educational television broadcasting experiment using the United States’ Applied Technology Satellite-6; and the Soviet Union launched a “fluorescent screen” stationary communications satellite, which is actually a practical radio and television satellite , Which solved the issue of television coverage in the country, especially in Siberia and the Far East. Countries that have not launched radio and TV satellites have also made plans, either purchased or developed on their own. For example, in the land of countries like the Thousand Island, Indonesia, long and narrow areas like Chile, South Asian countries as well as Western European countries adjacent to the country are preparing to launch radio and television satellites. German and French radio and television satellite “Symphony” will be put into use in 1983. “Radio and television satellite hot” has been formed in the world.