Wirelessly Synchronized One-Way RangingAlgorithm with Active Mobile Nodes

ETRI Journal

关键词: wireless OWR;    OWR;    SDS-TWR;    TWR;    positioning;    Ranging;   

Others  :  1185802
DOI  :  10.4218/etrij.09.0208.0305

【 摘 要 】

In this letter, we propose a one-way ranging algorithm that is based on wireless synchronization with measured timestamps and clock frequency offsets. In our proposed algorithm, an active mobile node initiates a ranging procedure by transmitting a ranging frame, and the anchor nodes report their timestamps for the received ranging frame to a reference anchor node. The synchronization of a pair of nodes is provided with instantaneous time information, and the corresponding difference of distances can be calculated.

   

【 参考文献 】

• [1]IEEE802.15.4a/D7, Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications for Low-Rate Wireless Personal Area Networks (LR-WPANs): Amendment to Add Alternate PHY, Jan. 2007.
• [2]Y. Qi and R. Kohno, "Mitigation of Sampling-Induced Errors in Delay Estimation," IEEE Int’l Conf. Ultra-Wideband, Sept. 2005, pp. 402-407.
• [3]J. Elson, L. Girod, and D. Estrin, "Fine-Grained Network Time Synchronization Using Reference Broadcasts," Proc. Operating Syst. Design and Implementation, vol. 36, Dec. 2002, pp. 147-163.