%0 Journal Article
%T Cooperative multi-user detection and ranging based on pseudo-random codes
%A C. Morhart
%A E. M. Biebl
%J Advances in Radio Science : Kleinheubacher Berichte
%D 2009
%I Copernicus Publications
%X We present an improved approach for a Round Trip Time of Flight distance measurement system. The system is intended for the usage in a cooperative localisation system for automotive applications. Therefore, it is designed to address a large number of communication partners per measurement cycle. By using coded signals in a time divison multiple access order, we can detect a large number of pedestrian sensors with just one car sensor. We achieve this by using very short transmit bursts in combination with a real time correlation algorithm. Futhermore, the correlation approach offers real time data, concerning the time of arrival, that can serve as a trigger impulse for other comunication systems. The distance accuracy of the correlation result was further increased by adding a fourier interpolation filter. The system performance was checked with a prototype at 2.4 GHz. We reached a distance measurement accuracy of 12 cm at a range up to 450 m.
%U http://www.adv-radio-sci.net/7/55/2009/ars-7-55-2009.pdf