无线电工程2025，Vol.55Issue(12)：2400-2408,9.DOI:10.3969/j.issn.1003-3106.2025.12.008
空间光通信弱光同步:关键技术与未来展望
Weak Light Synchronization in Space Optical Communication:Key Technologies and Future Prospects
摘要
Abstract
Intensity modulation/direct detection technology is usually used for space optical communication systems(intersatellite laser communication,deep space optical communication,etc.)in weak link scenarios.The received signal is characterized by the number of discrete photons that obey the Poisson distribution.The particle nature of photon signals,the dark counts of devices,background light interference,etc.can easily lead to symbol misinterpretation,furthermore,the inability to detect continuous waveforms makes traditional clock synchronization mechanisms ineffective.Therefore,dedicated weak light synchronization technology is required for space optical communication systems in weak link scenarios.The research status and key technologies of weak light synchronization are reviewed,including independent clock and symbol synchronization,joint clock and symbol synchronization,and frame synchronization.The development trends are also outlined to provide insights for the investigation of synchronization techniques in weak light communication systems.关键词
空间光通信/同步技术/时钟同步/符号同步/帧同步Key words
space optical communication/synchronization technology/clock synchronization/symbol synchronization/frame syn-chronization分类
信息技术与安全科学引用本文复制引用
孙凯琳,袁仁智,杨闯..空间光通信弱光同步:关键技术与未来展望[J].无线电工程,2025,55(12):2400-2408,9.基金项目
国家自然科学基金(62201075)National Natural Science Foundation of China(62201075) （62201075）
