利用腔电光力系统提高罗兰C授时能力研究  

Improving Timing Ability of Loran C by Electro-Opto-Mechanical Converter System

作　　者：赵露涵 杨春燕[1] 魏天丽 吴德伟[1] 刘勇飞 任钊恒 Zhao Luhan;Yang Chunyan;Wei Tianli;Wu Dewei;Liu Yongfei;Ren Zhaoheng(Information and Navigation College,Air Force Engineering University,Xi'an,Shaanxi710077,China)

机构地区：[1]空军工程大学信息与导航学院,陕西西安710077

出　　处：《光学学报》2021年第22期189-197,共9页Acta Optica Sinica

基　　金：国家自然科学基金(62073338)。

摘　　要：罗兰C系统受原子钟以及经典无线电信号测量精度的影响,难以为用户提供高精度授时。提出了一种基于杂化微波-光纠缠的罗兰C系统授时方案,通过腔电光力转换器制备纠缠微波-光信号,并利用纠缠信号的二阶相干函数得到信号传播时间,根据授时时序关系修正用户本地钟时刻并完成授时。仿真分析了腔电光力转换器的参数对授时精度的影响。所提方案在理论上实现了对罗兰C系统授时精度的提高,在抗压制干扰、欺骗干扰等方面都具有一定优势。Due to the influences of atomic clock and classical radio signal measurement accuracy,Loran C system is difficult to provide high-precision timing for users.In this paper,a microwave-optical entangled timing scheme used in Loran C system is proposed.The entangled microwave-optical signal is firstly prepared by the electro-opto-mechanical converter,then the signal propagation time is obtained by the second-order coherence function of the entangled signal,and finally the local clock time for users is corrected based on the timing sequence relationship and the timing is realized.The influence of electro-opto-mechanical converter parameters on timing accuracy is simulated and analyzed.The proposed scheme theoretically improves the timing accuracy of Loran C system,and has certain advantages in resisting suppression interference and deception interference.

关 键 词：量子光学 罗兰C授时系统 腔电光力系统 授时精度 杂化微波-光纠缠信号 

分 类 号：O431.2[机械工程—光学工程]