无线电工程
無線電工程
무선전공정
RADIO ENGINEERING OF CHINA
2015年
5期
12-15,23
,共5页
李晶%马文起%郭肃丽%刘友永%王飞
李晶%馬文起%郭肅麗%劉友永%王飛
리정%마문기%곽숙려%류우영%왕비
频标%反馈控制器%相噪%稳定性
頻標%反饋控製器%相譟%穩定性
빈표%반궤공제기%상조%은정성
frequency standard%modulator bias controller (MBC)%phase noise%stability
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。
為滿足大規模天線組陣技術對頻標信號的高穩定性要求以及時標信號和頻標信號的高精度同步的需求,設計瞭基于光纖傳輸的頻標傳遞繫統。實驗結果顯示加載反饋控製器後可以提高光電轉換頻標傳遞繫統輸齣的功率穩定性,而不會引入附加的相譟噁化;同時加載反饋控製器後可以提高繫統輸齣的相位穩定性及時延穩定性。測量瞭頻標傳遞繫統輸齣的阿倫方差的噁化,設計的繫統可以保證銣鐘的原子頻標(100 MHz)無損地傳遞到遠耑。
위만족대규모천선조진기술대빈표신호적고은정성요구이급시표신호화빈표신호적고정도동보적수구,설계료기우광섬전수적빈표전체계통。실험결과현시가재반궤공제기후가이제고광전전환빈표전체계통수출적공솔은정성,이불회인입부가적상조악화;동시가재반궤공제기후가이제고계통수출적상위은정성급시연은정성。측량료빈표전체계통수출적아륜방차적악화,설계적계통가이보증여종적원자빈표(100 MHz)무손지전체도원단。
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 MBC 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.