摘要
为满足大规模天线组阵技术对频标信号的高稳定性要求以及时标信号和频标信号的高精度同步的需求,设计了基于光纤传输的频标传递系统。实验结果显示加载反馈控制器后可以提高光电转换频标传递系统输出的功率稳定性,而不会引入附加的相噪恶化;同时加载反馈控制器后可以提高系统输出的相位稳定性及时延稳定性。测量了频标传递系统输出的阿伦方差的恶化,设计的系统可以保证铷钟的原子频标(100 MHz)无损地传递到远端。
A frequency standard transfer system based on fiber is designed for large scale antenna arrays to meet their high re- quirements for the high stability of frequency standard and high-precision synchronization between frequency- and time-standard signals. The experiment results indicate that a modulator bias controller （MBC） can improve the stability of output power of the system without deteriorating the phase noise.Meanwhile,the M BC can improve the stability of phase and time delay of the output RF signal of the sys- tem.The deterioration of Allan variance of the output frequency standard transferred through the system is measured.The experiment re- sults indicate that the atom frequency standard of Rubidium （ 100 MHz） can be transferred through the designed system to remote site without degradation.
出处
《无线电工程》
2015年第5期12-15,23,共5页
Radio Engineering
基金
国家自然科学基金资助项目(61308061)
关键词
频标
反馈控制器
相噪
稳定性
frequency standard
modulator bias controller （MBC）
phase noise
stability
