对于无线到达时间差定位网络的CFO辅助算法:分析研究和实验结果
Cédric Hannotier1, François Horlin1, François Quitin1
1Brussels School of Engineering, Université libre de Bruxelles, Avenue Franklin Roosevelt 50, 1000 Brussels, Belgium.
Sensors (Basel, Switzerland)
|February 10, 2024
概括
本研究介绍了一种新的无线发射器本地化方法,使用单个消息进行节同步. 它利用载波频率偏移 (CFO) 和到达时间 (ToA) 进行准确的定位和速度估计.
科学领域:
- 无线通信是一种无线通信.
- 定位系统的定位系统.
- 信号处理 信号处理
背景情况:
- 传统的无线局部化依赖于射频 (RF) 传感器来测量传播延迟.
- 精确的本地化需要在节点之间精确的时间同步.
- 现有的Over-The-Air (OTA) 同步方法通常需要多个消息,增加开销.
研究的目的:
- 为无线定位系统提出一种新的,高效的同步方法.
- 为了实现紧密的同步,只使用来自参考发射器的单一消息.
- 为了实现准确的定位和目标速度估计.
主要方法:
- 一种新的同步技术,利用单个参考消息的载波频率偏移 (CFO) 和到达时间 (ToA).
- ToA补偿了节点的绝对时间偏移.
- CFO补偿局部振荡器漂移,并使目标速度的估计成为可能.
主要成果:
- 拟议算法的错误的分析推导.
- 通过受控实验室实验验证.
- 使用软件定义的无线电测试台,通过现实的户外车辆测量来证明有效性.
结论:
- 拟议的方法实现了与单个消息紧密同步,减少了开销.
- 它准确地补偿时间偏移和局部振荡器漂移.
- 该算法有效地估计了目标速度,并在各种环境中得到验证.
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