A Metric for Quantifying UWB Ranging Error Due to Clock Drifts
A Metric for Quantifying UWB Ranging Error Due to Clock Drifts
复制标题
用于量化时钟漂移导致的 UWB 测距误差的指标
DOI：
10.1109/ipin54987.2022.9918104
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
Ashutosh Dhekne
中科院分区：
文献类型：
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作者：
Haige Chen;Ashutosh Dhekne
无线测距是两个或多个无线设备通过交换消息来确定它们的相对距离，是短程距离测量和定位的基本原语。这些方法用于 WiFi 和超宽带 (UWB) 无线电的精细时间测量，这些无线电在智能手机市场中不断增长。由于测距取决于准确的时间戳，因此设备之间的时钟漂移是影响测距精度的重要考虑因素。在短程定位环境中已经提出了几种具有自己的测距协议的应用程序，并且几乎所有应用程序都执行时钟漂移分析以评估协议和测距公式的质量。尽管这是标准做法，但缺乏一种方法来量化和比较时钟漂移引入的测量误差的程度。在这项工作中，我们引入了一种基于数值模拟的指标，可以跨方案进行直接比较，并演示它如何帮助分析距离测量误差。
Wireless ranging, where two or more wireless devices determine their relative distance by exchanging messages, is a fundamental primitive in short-range distance measurements and localization. These methods are used by fine-time measurement in WiFi, and ultra-wideband (UWB) radios which is seeing an uptick in the smartphone market. Since ranging depends on accurate timestamps, the clock drifts between devices is an important consideration that affects ranging precision. Several applications have been proposed in the short-range localization context with their own ranging protocols and almost all of them perform clock-drift analysis to assess the quality of the protocol and ranging formulation. Although this is standard practice, there lacks a way to quantify and compare the extent of clock-drift introduced measurement errors. In this work, we introduce a metric based on numerical simulations that enables direct comparisons across schemes, and demonstrate how it helps analyze distance measurement errors.
DOI：
10.1109/icnp49622.2020.9259374
发表时间：
2020-10
期刊：
2020 IEEE 28th International Conference on Network Protocols (ICNP)
影响因子：
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作者：
Yifeng Cao;Ashutosh Dhekne;M. Ammar
通讯作者：
Yifeng Cao;Ashutosh Dhekne;M. Ammar