基于架空光缆的高稳定频率信号传递技术研究  

Research on High Stable Frequency Signal Transmission Technology Based on Aerial Optical Cable

作　　者：王崇阳[1] 陈娉娉 肖博文 王正勇[1] 刘铁强[1] WANG Chongyang;CHEN Pingping;XIAO Bowen;WANG Zhengyong;LIU Tieqiang(The 54th Research Institude of CETC,Shijiazhuang 050081,China;Beijing Satellite Navigation Center,Beijing 100094,China;State Key Laboratory of Aerospace Dynamics,Xi'an 710043,China)

机构地区：[1]中国电子科技集团公司第54研究所,石家庄050081 [2]北京卫星导航中心,北京100094 [3]宇航动力学国家重点实验室,西安710043

出　　处：《计算机测量与控制》2024年第9期269-275,共7页Computer Measurement &Control

摘　　要：为解决架空光缆因晃动幅度大和温度变化剧烈引起的相位噪声恶化问题,采用双向传输与预补偿技术,设计了基于电子相位补偿的光纤频率传递方案,在包含30 km架空光缆、总长133 km的实际链路上进行频率传递试验,与单向传输设备相比相位噪声指标提高28 dB;采用双向传输光纤频率传递技术,在包含架空光缆与133 km全部埋地光缆进行对照测试,在5级风力情况下架空光缆传递相较恶化了4 dB,均可以满足架空光缆下频率传递使用需求;经实地试验表明,基于电子相位共轭的光纤频率传递技术可以优化经架空光缆传递后频率信号的相位噪声,为分布式雷达、分布式守时系统及航天测控等系统多站间同步方案提供支撑。In order to solve the phase noise deterioration caused by large shaking amplitude and drastic temperature changes of overhead optical cable,a fiber frequency transmission scheme based on electronic phase compensation is designed by using bidirectional transmission and pre-compensation technology.The frequency transmission test is carried out on the actual link containing 30 km overhead optical cable with a total length of 133 km.Compared with the unidirectional transmission scheme,the bidirectional transmission scheme improves the phase noise index by 28 dB.The bidirectional transmission fiber frequency transmission technology is used to make a comparison test between the overhead optical cable and the 133 km buried optical cable,and the transmission of the overhead optical cable deteriorates by 4 dB under the level 5 wind,which can meet the needs of frequency transmission under the overhead optical cable.On-site test results show that the optical frequency transfer technology based on electronic phase conjugation can optimize the phase noise of frequency signals transmitted by overhead optical cables,and provide a support for the multi-station synchronization scheme of distributed radar,distributed time-keeping system,and space telemetry and control system.

关 键 词：架空光缆 频率 传递 预补偿 相位噪声 

分 类 号：TN929.11[电子电信—通信与信息系统]