摘要
在分析量子测距定位原理与过程的基础上,考虑纠缠光穿过大气电离层和对流层的过程中产生的距离误差对系统测距精度造成的影响,根据纠缠光在电离层中的传播距离误差和电离层自由电子密度与纠缠光频率之间的关系,以及纠缠光在对流层中的传播距离误差与对流层气压、温度等因素之间的关系,提出3种抗大气干扰的量子测距定位方案;通过理论分析,推导出3种量子测距定位方案在削弱大气干扰带来的测距误差的表达式,并给出数值计算实例,说明基于3颗卫星加一个地面站的双频修正方案对大气层带来的测距误差最小.
Three quantum ranging positioning schemes against atmospheric interference are proposed based on the analysis of the principle and process of quantum ranging positioning schemes,considering the effects of distance error caused by entangled light passing through the atmospheric ionosphere and troposphere on the accuracy of the system,the relationship among the propagation distance error of the entangled light in the ionosphere,the free electron density in the ionosphere and the frequency of the entangled light,as well as the relationship between the propagation distance error of the entangled light in the troposphere and factors such as pressure,temperature and other factors.Expressions of the three quantum ranging positioning schemes to reduce the ranging error caused by atmospheric interference are derived by performing theoretical analyses.Numerical simulation examples are given to demonstrate that the dual-frequency correction scheme based on three satellites plus one ground station minimizes errors in ranging the atmosphere.
作者
丛爽
吴文燊
尚伟伟
陈鼎
CONG Shuang;WU Wenshen;SHANG Weiwei;CHEN Ding(School of Information Science and Technology, University of Science and Technology of China,Hefei 230027,China;State Key Laboratory of Space-Ground Integrated Information Technology, Beijing Institute of Satellite Information Engineering, Beijing 100086, China)
基金
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)资助.
关键词
量子定位系统
量子关联测距
到达时间差
传播距离误差
精度
quantum positioning system
quantum correlation ranging
time difference of arrival(TDOA)
propagation distance error
accuracy
