QPSK作为一种先进的数字调制方式，特别适用于数字卫星通信系统。
QPSK as an advanced digital modulation technique is fit for the digital satellite communication system well.
数字卫星通信以其信号质量好、覆盖面广、长期成本低等优点为广播电视的数字化传输提供了良好的传输平台。
Digital satellite communications provide a good transmitting flat for digital broadcasting because of its excellent signal quality, wide coverage and lower cost.
因此在卫星通信、数字移动通信、保密通信、语音邮件等方面都有广泛的应用。
Therefore it is widely used in the aspects of satellite communication, numeral mobile communication, privacy communication and pronunciation mail.
本文着重对光纤、数字微波和卫星通信几种传输方式进行经济、技术比较。
This paper mainly compared the optical fiber, digital microwave and satellite communication in technology and economy.
介绍了一种在航空制造和卫星通信领域用于复杂频率选择表面加工的机器人数字化加工系统(RDMS)。
A robot digital machining system (RDMS) used to machine complex frequency selective surfaces (FSS) in the aerospace manufacturing and satellite communications is introduced in this paper.
科技环境重点阐述影响电视新闻传播的四大技术：有线电视技术、卫星通信技术、计算机技术、数字化技术。
The key technology which affect the TV news communication consist of cable televisual technology, satellite technology, computer technology and digital technology.
以卫星通信为支撑集成数字集群、卫星导航和地理信息服务等功能，实现了车载机动应急通信传输。
With digital group, satellite navigation, geographic information service and other functions provided by satellite communication, it achieved mobile emergency communication transmission on wheels.
以卫星通信为支撑集成数字集群、卫星导航和地理信息服务等功能，实现了车载机动应急通信传输。
With digital group, satellite navigation, geographic information service and other functions provided by satellite communication, it achieved mobile emergency communication transmission on wheels.
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