基于蓝牙5.1 AOA和AOD的室内定位算法的研究和实施
Kun Xiao1, Fuzhong Hao2, Weijian Zhang2
1School of Computer Science and Engineering, University of Electronic Science and Technology, Chengdu 610056, China.
Sensors (Basel, Switzerland)
|July 27, 2024
概括
本研究引入了改进的蓝牙到达角 (AOA) 和出发角 (AOD) 算法,用于精确的室内定位. 改进的方法显著提高了准确性和实时性能,同时减轻了多路径干扰.
科学领域:
- 无线通信和导航无线通信和导航
- 用于定位系统的信号处理.
背景情况:
- 蓝牙5.1引入了到达角 (AOA) 和出发角 (AOD) 定向,这使得它成为室内定位的有希望的技术,因为它的成本低,功耗低.
- 使用蓝牙AOA/AOD的现有室内定位系统通常采用简单的算法,导致准确性差,实时性能有限,以及在各种场景中易受多路径传播问题的影响.
研究的目的:
- 为了解决当前蓝牙AOA/AOD室内定位算法的局限性.
- 提出和评估一个优化的方法,整合最小平方和反多路算法,以提高定位准确性和稳定性.
主要方法:
- 分析了蓝牙定向 (AOA/AOD) 和阵列信号出发方向 (DOA) 估计的原理.
- 集成最小平方算法以最大限度地减少定位错误并提高准确性.
- 整合了一种反多路径干扰算法,以抵消各种环境中的信号反射.
主要成果:
- 拟议的算法有效地减轻了独立蓝牙AOA/AOD方法固有的准确性错误.
- 与现有解决方案相比,实时性能得到了显著改善.
- 开发的算法成功克服了室内环境中多路径传播的有害影响.
结论:
- 该研究为蓝牙AOA和AOD室内定位提供了一个高效和适用的解决方案.
- 综合方法提高了定位精度,实时功能和对多路径效应的稳定性.
- 这项研究为更可靠,更广泛地采用蓝牙用于室内导航铺平了道路.
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