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20世纪90年代后,随着航天技术、微电子技术、数字压缩技术和计算机技术的进步,卫星数字电视直播技术得到了飞速发展。卫星电视系统摆脱了地理环境的限制,并且具有节目容量大,数字信号抗干扰能力强,频带资源利用率高的特点,迅速步入产业化和商业化,并向全球迅速扩展。
After the 1990s, with the advancement of aerospace technology, microelectronics technology, digital compression technology and computer technology, satellite digital television direct broadcast technology has been rapidly developed. The satellite TV system has got rid of the limitation of the geographical environment and has the characteristics of large program capacity, strong anti-interference ability of digital signals and high frequency resource utilization. It has rapidly entered into industrialization and commercialization and rapidly expanded to the world.