量子定位系统在沙尘暴背景下的最优纠缠度自适应策略
Optimal Entanglement Degree Adaptive Strategy for Quantum Positioning System in the Context of Sandstorm
投稿时间:2022-11-23  修订日期:2023-02-22
DOI:
中文关键词:  量子光学  量子定位系统  纠缠度  沙尘暴  自适应
英文关键词:quantum optics  quantum positioning system  degree of entanglement  sandstorm  self-adaption
基金项目:国家自然科学基金;陕西省国际科技合作与交流计划项目;陕西省自然科学基础研究计划项目
作者单位邮编
马虎森 西安邮电大学 710121
聂敏* 西安邮电大学 710121
杨光 西安邮电大学 
孙爱晶 西安邮电大学 
张美玲 西安邮电大学 
裴昌幸 西安电子科技大学 
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中文摘要:
      量子定位系统(Quantum Positioning System , QPS)具有定位精度高、安全系数高的特点,然而沙尘暴会使得光量子纠缠度产生较大变化,进而影响到量子定位系统的定位误差。为了降低这种误差,本文基于双卫星星地链路切换策略提出了抵抗沙尘暴干扰的最优纠缠度自适应调整(optimal entanglement degree adaptive , OEDA)策略。建立了沙尘暴各参数、传输距离与纠缠度之间的关系,并且将沙尘暴整体特征对系统的定位误差在自适应调整前后进行对比。仿真结果表明,当沙尘暴整体特征聚合因子为10,传输距离为10km时,采用OEDA算法后,系统误差由0.14m缩减至0.02m,因而可知经过纠缠度自适应策略后可以提高沙尘暴天气下QPS的精确度。
英文摘要:
      Quantum Positioning System (QPS) has the characteristics of high positioning accuracy and high safety factor. However, sandstorm can cause great changes in optical quantum degree of entanglement, which will further affect the positioning error of quantum positioning system. In this case in order to reduce the positioning error, an optimal entanglement degree adaptive (OEDA) strategy to resist sandstorm interference is proposed based on switching strategy of dual-satellite satellite-ground link. The relationships between each parameter of the sandstorm, transmission distance and the degree of entanglement are established. And the positioning error caused by the global feature of sandstorm is compared before and after the adaptive adjustment of the system. The simulation results show that when the overall characteristic aggregation factor of sandstorm is 10 and the transmission distance is 10km, the system positioning error is reduced from 0.14m to 0.02m by using OEDA algorithm. Thus it is known that the accuracy of QPS in sandstorm can be improved by using optimal entanglement degree adaptive strategy.
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