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随着边远地区高山台站中央及省台广播电视节目无线覆盖任务的增加,信号源成为安全播出的重要环节。模拟微波信号源套数不够,卫星信号易受雷电、暴雨和日凌影响,质量不高。我省近年改造了模拟微波为SDH数字微波,很好地解决了以上问题,为紫金县电视调频转播台的安全播出提供了稳定可靠优质信号源。我省数字微波改造工程已竣工六年,该工程从总体设计、系统考虑、设备选型和工程施工等方面,实际运行证明都是成功的,笔者主要阐述数字微波改造工程中涉及到的几个关键技术和应用,与同行交流。
With the increasing wireless coverage of radio and television programs at the central and provincial stations of alpine stations in remote areas, signal sources have become an important part of security broadcasting. The number of analog microwave signal generator is not enough, and the satellite signal is easily affected by thunder and lightning, heavy rain and Suning, and the quality is not high. In recent years, our province has transformed the analog microwave into SDH digital microwave, which has well solved the above problems and provided a stable and reliable high-quality signal source for the safe broadcasting of Zijin TV FM relay stations. Digital microwave reconstruction project in our province has been completed for six years, the project from the overall design, system considerations, equipment selection and construction, and other aspects of the actual operation proved to be successful, the author mainly describes digital microwave reconstruction project involves a few Key technologies and applications, communicate with peers.