Title :
Accuracy of spectral analysis methods for precision indoor positioning system
Author :
Lauterbach, Martin ; Pola, M. ; Zaplatilek, Ludek ; Bezousek, Pavel
Author_Institution :
Dept. of Electr. Eng., Univ. Pardubice, Pardubice, Czech Republic
Abstract :
At the University of Pardubice there is currently developed a modern positioning system for localization of fire brigade and members of rescue corps. The TDOA based system use an OFDM wideband signal to separate direct propagated signal from mixture of its replicas created in a multipath channel. In the paper, the model of a received signal is presented and this signal is processed by spectrum analysis methods to estimate the direct propagated signal delay. The accuracy of nonparametric, parametric and subspace methods is compared and new insights into application of spectral analysis methods are presented.
Keywords :
Global Positioning System; OFDM modulation; direction-of-arrival estimation; emergency services; indoor radio; multipath channels; radiowave propagation; source separation; spectral analysis; OFDM wideband signal; TDOA based system; University of Pardubice; direct propagated signal delay; direct propagated signal separation; fire brigade localization; modern positioning system; multipath channel; nonparametric methods; precision indoor positioning system; received signal; rescue corps; signal processing; spectral analysis methods; spectrum analysis methods; subspace methods; Accuracy; Delay effects; Delays; Educational institutions; Noise; OFDM; Spectral analysis; Capon; OFDM; RTLS; multipath; parametric; spectrum analysis; subspace;
Conference_Titel :
Digital Technologies (DT), 2014 10th International Conference on
Conference_Location :
Zilina
DOI :
10.1109/DT.2014.6868716
