本文主要介绍国内外卫星通信技术的新进展。
就当前卫星通信技术的若干热点作了一些概括和综述。
A summary and review about some hot points in current satellite communications technology was given.
本文主要介绍近年来，时隙aloha技术在移动卫星通信中的一些新的发展趋势。
This paper propose the new development of S-ALOHA technique used in mobile satellite communication system.
卫星轨道预报技术是与卫星通信及卫星回收的关键技术。
Satellite orbital prediction technology is a key technology for satellite communication and satellite recovery.
第二种技术是微波，一般工作在长距离通信装置和卫星通信中。
Microwave, the second technology, is typically used in long range setups and satellite communications.
最后，对星座卫星通信系统安全预警机制的关键技术进行了讨论。
At last, this paper discussed the key technologies which were used for security warn mechanism.
多址协议是VSAT卫星通信网的关键技术之一。
The multiple access protocol is one of the key technologies of VSAT satellite communication network.
网络同步是卫星通信系统的关键技术。
The discussion of the power system digital synchronization network;
网络同步是卫星通信系统的关键技术。
The discussion of the power system digital synchronization network;
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