摘要
电视监控在生活和工作中得到了广泛的应用,然而在某些环境中,由于成本或地形所限,有线电视监控无法实现。无线网络产品的快速发展和视频压缩标准的日渐完善对此提供了良好的解决方案。从工程的角度阐述了两种常用微波扩频技术的原理和特点,结合实际应用环境,对频点的选取、扩频技术的采用、天线的选择与调整提出了具体的方法。
Closed circuit television monitor system is widely applied in living and working. But in some environments, closed circuit television monitor system can not be realized due to the limitation of the cost and landform. The development of wireless web products and the maturation of video compression standard provide a good solution for this condition. The paper dissertates the theory and feature of two kinds of typical spread spectrum technology from the point of project. According to the applied environments, the article offers the concrete methods for selection of frequency band, adoption of spread spectrum technology, adjustment and selection of antenna.
出处
《光电子技术》
CAS
2006年第1期66-68,共3页
Optoelectronic Technology
关键词
直接序列扩频
跳频
频点
direct sequence spread spectrum
frequency hopping
frequency band
