Correction of signal atmospheric propagation errors in quantum satellite positioning system
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摘要: 本文对量子卫星定位系统(QPS)中的纠缠光穿过大气电离层和对流层过程中所产生的路径延迟误差进行研究. 根据电离层路径延迟与纠缠光频率以及纠缠光传播路径单位面积上电离层自由电子总含量(TEC)之间的关系,提出3种电离层路径延迟修正方案,并对每一种方案的优缺点进行分析. 根据对流层路径延迟与气象参数之间的关系,以及气象参数与纬度、高度和年积日的关系,提出5种对流层路径延迟修正方案,并分析各修正方案的优缺点. 本文所做研究有助于进一步提高QPS的精度.Abstract: In this paper, the propagation errors caused by the path delay of the signal passing through the ionosphere and the troposphere in the process of the entangled light signal in the quantum satellite positioning system are studied. According to the relationships between the ionospheric path delay, the entangled light frequency and the total free electron content of the ionosphere per unit area of the entangled light propagation path, three kinds of ionospheric path delay correction schemes are proposed, and the advantages and disadvantages of each scheme are analyzed. We also study five tropospheric path delay correction schemes based on the relationships between tropospheric path delay and meteorological parameters, and the relationship between meteorological parameters, latitude, altitude and annual product date. The advantages and disadvantages of each correction scheme are analyzed. The correction methods studied in this paper can increase further the accuracy quantum satellite positioning systems.
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Key words:
- ionosphere /
- troposphere /
- path delay /
- entangled light /
- correction scheme
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