摘要
为确保广播电视信号不间断传输,增强对突发事件的应急响应能力,杭州利用1 550 nm传输技术结合色散补偿技术,建设了区县数字电视灾备信号模数混合传输网。介绍杭州区县1 550 nm灾备传输网设计方案和系统指标测试,证实1 550 nm经过300多km传输后仍然具有优良的播出质量,满足国家广电总局新颁布的《广播电视安全播出管理规定》的要求,1 550 nm光纤传输技术在数字电视区县联网中具有广阔的应用前景。
To ensure uninterrupted broadcast television signal transmission, enhance the ability of emergency response to emergencies. Hangzhou 1550nm transmission technology combines the use of dispersion compensation technology to build a county disaster recovery digital television signals mixed analog -digital transmission network. This paper describes the Hangzhou district 1550nm transmission network design and disaster recovery system indicators tested 1550nm after transmission through 300 km of the broadcast still has excellent quality, come to disaster recovery system construction to meet the SARFT issued a new ＂radio broadcast television safe- ty regulations＂ requirements, 1550nm optical fiber transmission technology networking applications in the digital TV counties still have application
出处
《中国有线电视》
2011年第12期1385-1393,共9页
China Digital Cable TV
关键词
灾备
SDH
光纤传输
数字电视
色散补偿
disaster recovery
SDH
optical transmission
digital television
dispersion compensation
