Title :
UWB TDOA localization system: Receiver configuration analysis
Author :
Ye, Ruiqing ; Liu, Huaping
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Oregon State Univ., Corvallis, OR, USA
Abstract :
The accuracy of time-difference-of-arrival (TDOA) ultra-wideband (UWB) localization system depends mainly on two factors: the receiver geometric configuration and the TDOA measurement accuracy. In this paper, we analyze the geometric dilution of precision (GDOP) of TDOA localization when the receiver geometric configurations are near optimum. The analytical relationship between the GDOP and the number of receivers is derived. The position error bound as a function of the signal bandwidth and the number of receivers based on the UWB distance error model derived from measurement is simulated. These results provide a useful guidance for optimizing practical localization systems.
Keywords :
radio receivers; time-of-arrival estimation; ultra wideband communication; TDOA measurement accuracy; UWB TDOA localization system; UWB distance error model; geometric dilution of precision; position error bound; receiver geometric configuration analysis; signal bandwidth; time difference of arrival ultrawideband localization system; Accuracy; Bandwidth; Covariance matrix; Estimation; Receivers; Transmitters; Ultra wideband technology; Ultra-wideband (UWB); geometric dilution of precision (GDOP); position error bound (PEB); receiver geometric configuration; time difference of arrival (TDOA);
Conference_Titel :
Signals Systems and Electronics (ISSSE), 2010 International Symposium on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-6352-7
DOI :
10.1109/ISSSE.2010.5607083
