通过几种多址方式的比较，选出最适合于高性能、低价格卫星数据通信系统的优越方案。
By comparing several multiple access modes, an optimal scheme is chosen which is suitable for a cost-effective satellite data communication system.
本文简要介绍了国际海事卫星通信系统(INMARSAT)，重点对该系统的移动数据通信业务及其应用进行了探讨。
This paper gives a brief introduction on the INMARSAT system with the mobile data communication service of the system and its application being discussed in detail.
智能公共交通系统是将信息、数据通信、电子控制、卫星定位、计算机网络等科学技术应用于整个公共交通系统中。
The public transport intelligent management system is such a system with application of advanced techniques of information, electronic control, GPS and computer network.
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