摘要
为了减少星间激光时频传输过程中的多普勒频移并提高星间通信的可靠性,提出了一种多普勒频移补偿技术。首先,对多普勒频移进行了理论分析和仿真,得到了两卫星在24 h通信中断前传输激光光学频率所产生的多普勒频移;然后,设计了一个多普勒频移补偿系统用于星间激光多普勒频移补偿。仿真结果表明:该系统能在约15个控制周期内完成多普勒频移补偿,使得补偿后的多普勒频移小于8 kHz,比未补偿的情况改善了6个数量级。
In order to reduce the Doppler shift in the process of time-frequency transmission and improve the reliability of inter-satellite communication,a Doppler shift compensation technique is proposed.Firstly,the Doppler shift is analyzed theoretically and simulated,and the Doppler shift is obtained when the two satellites transmit the laser optical frequency before the communication is interrupted for 24 h.Then,a Doppler shift compensation system is designed for intersatellite laser Doppler shift compensation.The simulation results show that the system can complete Doppler shift compensation in about 15 control cycles,making the compensated Doppler shift less than 8 kHz,which is 6 orders of magnitude better than the uncompensated condition.
作者
罗璋嗣
梁晓东
LUO Zhangsi;LIANG Xiaodong(The 34th Research Institute of CETC,Guilin Guangxi 541004,China)
出处
《光通信技术》
2023年第5期34-36,共3页
Optical Communication Technology
关键词
激光时频传递
星间激光链路
光学频率
多普勒频移补偿
laser time-frequency transfer
inter-satellite laser link
optical frequency
Doppler frequency shifter compensation
