Edge Computing-based Differential Positioning Method for BeiDou Navigation Satellite System
Edge Computing-based Differential Positioning Method for BeiDou Navigation Satellite System
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基于边缘计算的北斗卫星导航系统差分定位方法
DOI：
10.3837/tiis.2019.01.005
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发表时间：
2019-01
影响因子：
1.5
通讯作者：
Rui Qiu
中科院分区：
文献类型：
--
作者：
Lina Wang;Linlin Li;Rui Qiu
北斗导航卫星系统是全球四大导航卫星系统之一。目前的系统已被广泛用于军事和航空航天，交通运输和海洋等领域。然而，北斗系统仍然存在挑战，需要对延迟敏感装置作出快速反应。差分定位算法被称为基于数据中心的差分定位（DCDP）方法被广泛使用，以避免误差的影响。该方法将多个基站的定位信息上传到数据中心，由数据中心基于最小方差或加权平均算法统一计算定位误差。然而，DCDP方法具有高延迟和过载风险。为了解决这些问题，本文引入边缘计算来缓解数据中心的压力。基于边缘计算的差分定位（ECDP）方法不将定位信息发送到数据中心，而是选择最近的参考站进行边缘计算，并将差值直接发送到移动的接收机。仿真和实验结果表明，ECDP的性能优于DCDP方法。ECDP方法的延迟比DCDP方法的延迟小约500 ms。此外，在允许的突发误差范围内，ECDP方法的定位精度中值为0.7923m，而DCDP方法的定位精度中值为
BeiDou navigation satellite system (BDS) is one of the four main types of global navigation satellite systems. The current system has been widely used by the military and by the aerospace, transportation, and marine fields, among others. However, challenges still remain in the BeiDou system, which requires rapid responses for delay-sensitive devices. A differential positioning algorithm called the data center-based differential positioning (DCDP) method is widely used to avoid the influence of errors. In this method, the positioning information of multiple base stations is uploaded to the data center, and the positioning errors are calculated uniformly by the data center based on the minimum variance or a weighted average algorithm. However, the DCDP method has high delay and overload risk. To solve these problems, this paper introduces edge computing to relieve pressure on the data center. Instead of transmitting the positioning information to the data center, a novel method called edge computing-based differential positioning (ECDP) chooses the nearest reference station to perform edge computing and transmits the difference value to the mobile receiver directly. Simulation results and experiments demonstrate that the performance of the ECDP outperforms that of the DCDP method. The delay of the ECDP method is about 500 ms less than that of the DCDP method. Moreover, in the range of allowable burst error, the median of the positioning accuracy of the ECDP method is 0.7923m while that of the DCDP method is
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DOI：
10.1016/j.future.2016.06.024
发表时间：
2017-05
期刊：
Future Gener. Comput. Syst.
影响因子：
--
作者：
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通讯作者：
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DOI：
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发表时间：
2014-08-20
期刊：
Sensors (Basel, Switzerland)
影响因子：
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作者：
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通讯作者：
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影响因子：
4.9
作者：
Montenbruck, Oliver;Steigenberger, Peter;Hauschild, Andre
通讯作者：
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影响因子：
4.9
作者：
Geng, Jianghui;Teferle, F. N.;Liu, J.
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DOI：
10.1007/978-3-7091-3311-8
发表时间：
1992
期刊：
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影响因子：
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作者：
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通讯作者：
B. Hofmann-Wellenhof;H. Lichtenegger;J. Collins