【摘要】 屿头岛距离陆地13 km,岛内有线电视用户1 500多户,由于地理条件限制,只能接收10套电视节目,为丰富岛上居民文化生活,当地政府决定为屿头岛进行CATV联网。为保证信号质量,经论证决定采用调幅、定向辐射的多路微波传输系统(AML),由福清长杰视波研究所负责安装调试。目前该传输系统传送38套模拟电视,图像指标达到4级以上,受到当地群众的认可,系统还预留了数字电视和双向传输接口,下面探讨系统数据推导和实测结果,供同行参考。更多还原

【Abstract】 In Yutou Island,13 kilometer from the land,there are 1500 CATV users settled.Because of the physiographic condition,they can only receive 10 Channels.In order to solve this problem,the local government decided to merge Yutou Island into CATV network.In order to ensure the signal quality,the multi-directional radiation microwave transmission system of amplitude modulation and directional radiation(abbreviated as AML) are adopted after discussion.Fuqing Chang-Jie visual microwave institute is responsible for the installation and debugging.At present,the transmission system has transmitted 38 analogue television programs.And the image index reached level 4 or higher.The system also prepared digital TV transmission interface and double-way transmission interface.Herein,the paper discusses system data transmitting and test result for reference.更多还原