Satellite onboard processing for multimedia applications
Satellite onboard processing for multimedia applications
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用于多媒体应用的卫星星载处理
DOI：
10.1109/35.846085
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
M. Wittig
中科院分区：
文献类型：
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作者：
M. Wittig
对于未来的多媒体应用，卫星可能发挥重要作用。对于广播应用来说，卫星非常适合照亮大片地理区域。然而，多媒体应用是交互式的，因此是广播任务和多点对点任务的组合。自然的问题是，卫星系统能否与地面有线网络提供的容量竞争？如果答案是肯定的，正如本文所表明的那样，那么第二个问题就出现了：从最先进的卫星技术迁移到如此先进的概念需要哪些新的发展？以欧洲航天局在该领域的活动为例，概述了构成完整多媒体通信卫星系统所需的构件。基于这一技术概述，对欧洲航天工业在欧洲航天局的支持下开发的系统进行了讨论。
For future multimedia applications, satellites might play an important role. For broadcast applications satellites are ideally suited to illuminate a large geographical area. However, multimedia applications are interactive, and are therefore a combination of a broadcast mission and a multipoint-to-point mission. The natural question is, can a satellite system compete with the capacity provided by terrestrial cable networks? If the answer is positive, and it shown in this article that it is, a second question arises: what new developments are required to migrate from the state-of-the art satellite technology to such advanced concepts? Taking the example of the European Space Agency's activities in this field, an overview of the required building blocks which make up a complete multimedia communication satellite system are described. Based on this technological overview a discussion of the systems developed by European space industries with support from the European Space Agency is given.