北京航空航天大学学报 ›› 2020, Vol. 46 ›› Issue (10): 1834-1843.doi: 10.13700/j.bh.1001-5965.2019.0540

• 论文 • 上一篇    下一篇

量子定位系统中符合计数与到达时间差的获取

丛爽, 宋媛媛   

  1. 中国科学技术大学 自动化系, 合肥 230027
  • 收稿日期:2019-10-12 发布日期:2020-10-29
  • 通讯作者: 丛爽 E-mail:scong@ustc.edu.cn
  • 作者简介:丛爽 女,博士,教授,博士生导师。主要研究方向:运动控制、智能控制和量子系统控制理论及其在量子导航定位系统中应用。
  • 基金资助:
    国家自然科学基金(61973290);天地一体化信息技术国家重点实验室开放基金(2015_SGIIT_KFJJ_DH_04)

Coincidence counting and acquisition of the time difference of arrival in quantum positioning systems

CONG Shuang, SONG Yuanyuan   

  1. Department of Automation, University of Science and Technology of China, Hefei 230027, China
  • Received:2019-10-12 Published:2020-10-29
  • Supported by:
    National Natural Science Foundation of China (61973290); Open Research Fund of State Key Laboratory of Space-Ground Integrated Information Technology (2015_SGIIT_KFJJ_DH_04)

摘要: 基于MATLAB图形用户界面接口(GUI),采用软件设计方式,实现量子纠缠光信号的采集,以及对采集到的两路量子纠缠光信号的符合算法。通过对符合算法中不同的符合门宽、采集时间和延时增加步长3个重要参数的性能实验,优化和确定各参数的选值。通过对量子纠缠光符合计数与到达时间差(TDOA)的研究,完成地面数据获取与信息处理模块的设计与实现。设计并实现了时间差拟合的仿真平台。实验结果达到了期望的精度和效率的需求。

关键词: 自发参量下转换, 量子纠缠光, 到达时间差(TDOA), 符合计数, 曲线拟合

Abstract: Based on the Graphic User Interface (GUI) in MATLAB, the software is designed to realize the acquisition of quantum entangled light signals and the coincidence algorithm of the two entangled photon signals collected. At the same time, the selection of each parameter is optimized and determined by performance experiments on three important parameters including the coincidence gate width, the acquisition time and the delay increasing step in the coincidence algorithm. The design and implementation of the ground data acquisition and information processing module is completed by studying coincidence counting and Time Difference of Arrival (TDOA) based on quantum entangled light. Finally, the simulation platform of TDOA fitting is designed and implemented. The experimental results meet the desired accuracy and efficiency requirements.

Key words: spontaneous parameter down conversion, quantum entangled light, Time Difference of Arrival (TDOA), coincidence counting, curve fitting

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