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1988～1989年(截止至9月1日)期间,世界上共发射了30颗通信卫星,其中欧洲9颗,日本7颗,美国6颗,国际卫星组织5颗,其它国家3颗。这些卫星当中有16颗作为国内通信系统,6颗为国际或地区通信系统,6颗为电视直播系统,2颗为跟踪与数据中继卫星系统。 至1988年底,世界上共有约1850个36MHz的转发器在使用,其中国际通信组织占33％,美国占36％,加拿大占6％,欧洲占8％,日本占4％,其它国家(不包括苏联和中国)共占13％。据分析,到1992年,投入使用的转发器数量可能增至2500个,国际通信组织将占31％左右,美国可能占29％,加拿大占5％,欧洲
During the period from 1988 to 1989 (as of September 1), 30 communications satellites were launched in the world, including 9 in Europe, 7 in Japan, 6 in the United States, 5 in the international satellite organization and 3 in other countries. Sixteen of these satellites were used as domestic communications systems, six for international or regional communications systems, six for television live broadcast systems and two for tracking and data relay satellite systems. By the end of 1988, there were about 1,850 36MHz transponders in use in the world, including 33% in the International Telecommunications Union, 36% in the United States, 6% in Canada, 8% in Europe and 4% in Japan. Other countries (excluding Soviet Union and China) together accounted for 13%. According to the analysis, by 1992, the number of transponders put into operation may increase to 2,500, the international communications organization will account for about 31%, the United States may account for 29%, Canada 5%, and Europe