Title :
Antenna radiation pattern influence on UWB ranging accuracy
Author :
Dashti, Marzieh ; Laitinen, Tommi ; Ghoraishi, Mir ; Haneda, Katsuyuki ; Toivanen, Juha ; Takada, Jun-ichi ; Vainikainen, Pertti
Author_Institution :
Tokyo Inst. of Technol., Tokyo, Japan
Abstract :
Ultra-wideband (UWB) technology has become an attractive choice for high precision indoor localization. Pulse based UWB is found to be suitable for overcoming the signal time-of-arrival (ToA) ambiguities due to multipath. Much work has been done on UWB ToA estimation in general. However, the effect of the radiation patterns of antennas used in localization applications have not been considered. This paper investigates the effect of antenna directivity on the detection of the direct path in a typical indoor scattering environment. It is experimentally shown that the ranging error is reduced by using directional transmit antennas. The results are obtained in a line-of-sight (LOS) propagation environment and are based on the ToA based ranging technique.
Keywords :
Antenna measurements; Antenna radiation patterns; Antennas and propagation; Broadband antennas; Delay estimation; Financial advantage program; Propagation delay; Scattering; Time of arrival estimation; Ultra wideband antennas;
Conference_Titel :
Antennas and Propagation (EuCAP), 2010 Proceedings of the Fourth European Conference on
Conference_Location :
Barcelona, Spain
Print_ISBN :
978-1-4244-6431-9
Electronic_ISBN :
978-84-7653-472-4
