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随着信息社会的发展,人们对安防监控的要求越来越高和普遍,除集中的党政机关、企事业等各单位外,还需要在海上、山地、矿井、地下室等复杂的环境而无法实现有线网络架设的地方,实现安防视频监控。因此,这就需要用到无线视频传输技术。但由于无线信道带宽资源有限,干扰因素多,而视频信号数据量大,实时性要求高。因此,对无线视频传输技术的研究,引起了国内外有关专家的关注。本文简述无线视频传输技术的各种类型,重点介绍了COFDM无线传输技术的特点,及其在安防监控中的应用,并指出进一步的发展方向。
With the development of information society, people are increasingly demanding and demanding on security monitoring. In addition to the centralized party and government organs, enterprises and other units, people also need to have complex environments such as sea, mountains, mines and basements and can not Realize the place that the wired network erects, realize the security video surveillance. Therefore, this requires the use of wireless video transmission technology. However, due to the limited bandwidth of the wireless channel resources, interference factors, and the large amount of video signal data, real-time requirements. Therefore, the research on wireless video transmission technology has aroused the concern of domestic and foreign experts. This article describes various types of wireless video transmission technology, focuses on the characteristics of COFDM wireless transmission technology, and its application in security monitoring, and points out the direction of further development.