论文标题
从双向范围提取到达的时间差
Time Difference of Arrival Extraction from Two-Way Ranging
论文作者
论文摘要
双向范围可实现两个主动方之间的距离估计，并允许尽管相对时钟偏移和漂移，但仍可以进行飞行测量时间。受消息的数量限制，可扩展解决方案基于到达的时间差，以推断被动听众的时机信息。但是，对准确距离估计的需求决定了时间同步的紧密结合，从而将可扩展性限制为相对于静态，同步锚的被动标签的定位。这项工作描述了从双向范围过程中提取到达信息的时间差异，从而使被动侦听器上的距离信息提取了距离信息，并进一步允许可扩展的标签定位，而无需静态或同步锚。预期误差将正式扣除。尽管相对时钟偏移和两侧的双向距离和单面双向范围，但扩展允许提取正时差，并带有附加的载波频率偏移估计。
Two-Way Ranging enables the distance estimation between two active parties and allows time of flight measurements despite relative clock offset and drift. Limited by the number of messages, scalable solutions build on Time Difference of Arrival to infer timing information at passive listeners. However, the demand for accurate distance estimates dictates a tight bound on the time synchronization, thus limiting scalability to the localization of passive tags relative to static, synchronized anchors. This work describes the extraction of Time Difference of Arrival information from a Two-Way Ranging process, enabling the extraction of distance information on passive listeners and further allowing scalable tag localization without the need for static or synchronized anchors. The expected error is formally deducted. The extension allows the extraction of the timing difference despite relative clock offset and drift for the Double-Sided Two-Way Ranging and Single-Sided Two-Way Ranging with additional carrier frequency offset estimation.
