Title :
TOA-based lateral distance measurement system using UWB impulse radio
Author :
Nakamura, Keiichi ; Kobayashi, Shinsuke ; Matsumoto, Hisanori ; Koshizuka, Noboru ; Sakamura, Ken
Author_Institution :
Grad. Sch. of Interdiscipl. Inf. Studies, Univ. of Tokyo, Tokyo, Japan
Abstract :
Lateral distance between two traffic participants is an important context for intelligent transportation systems for realizing a collision prediction system. Obtaining lateral distance requires costly hardware, prohibiting traffic participants such as pedestrians and/or bicyclists to receive benefits of lateral distance information for securing their safety. In this paper, a time-of-arrival (TOA) based bilateration is proposed for estimating relative lateral distance using ultra-wideband impulse radio (UWB-IR). Ranging error of UWB-IR systems affecting the estimation accuracy of lateral distance is coped with applying a low pass filter to angular data. Experimental results show that the estimation error is reduced from 8 m to 3 m when the relative distance between a target vehicle and a pedestrian is less than 15 m, using a portable UWB-IR system with 30 cm ranging accuracy.
Keywords :
distance measurement; low-pass filters; time-of-arrival estimation; ultra wideband communication; TOA-based lateral distance measurement system; UWB impulse radio; collision prediction system; intelligent transportation systems; ranging error; time-of-arrival based bilateration; Accuracy; Base stations; Distance measurement; Estimation error; Target tracking; Transceivers; Vehicles; Lateral distance; collision prediction; low pass filter; relative position; ultra-wideband impulse radio;
Conference_Titel :
Wireless and Mobile Computing, Networking and Communications (WiMob), 2010 IEEE 6th International Conference on
Conference_Location :
Niagara Falls, ON
Print_ISBN :
978-1-4244-7743-2
Electronic_ISBN :
978-1-4244-7741-8
DOI :
10.1109/WIMOB.2010.5645049
