Title :
Precise asynchronous RF ToF measurement based on Two-Way-Ranging using heterogeneous clocks
Author :
Saigo, Yusuke ; Ko, Sang-il ; Takayama, Jun-ya ; Ohyama, Shinji
Author_Institution :
Grad. Sch. of Sci. & Eng., Tokyo Inst. of Technol., Tokyo, Japan
Abstract :
In this paper, a novel RF TOF ranging method for wireless sensor networks based on Two-Way-Ranging (TWR) using heterogeneous clocks is proposed. It generates new virtual time resolution which is smaller than the intrinsic time resolution of two clocks. In order to get TOF information without synchronization of two nodes, this system uses round trip time of RF, where one sensor node transmits RF signals at prescribed time. We analyzed this method and confirmed that the resolution of TOF ranging is greatly improved.
Keywords :
clocks; distance measurement; radiofrequency measurement; wireless sensor networks; RF signal; TWR; asynchronous RF ToF measurement; heterogeneous clock; round trip time; two way ranging; virtual time resolution; wireless sensor networks; Clocks; Distance measurement; Frequency measurement; RF signals; Radio frequency; Synchronization; Wireless sensor networks; heterogeneous clocks; time-of-flight (ToF); two-way-ranging (TWR); wireless sensor networks (WSNs);
Conference_Titel :
SICE Annual Conference (SICE), 2012 Proceedings of
Conference_Location :
Akita
Print_ISBN :
978-1-4673-2259-1
