Title :
Multipath detection in TDOA localization scenarios
Author :
Steffes, Christian ; Rau, Sven
Author_Institution :
Dept. Sensor Data & Inf. Fusion, Fraunhofer Inst. for Commun., Wachtberg, Germany
Abstract :
In this paper, we investigate the detection of multi-path signal propagation in a Time Difference of Arrival (TDOA) localization scenario. Usually, TDOA measurements are obtained by determining the absolute maximum of the cross correlation function of signals recorded at different sensor nodes in a sensor network. Multipath signal propagation causes multiple peaks in the cross correlation function which lead to erroneous emitter localization. We use hypotheses of possible multipath signal propagation calculated from the autocorrelation functions to identify the line of sight (LOS) peak in the cross correlation function of a sensor pair.
Keywords :
correlation methods; multipath channels; signal detection; time-of-arrival estimation; wireless sensor networks; LOS peak; TDOA localization scenarios; absolute maximum; autocorrelation functions; cross correlation function; line of sight peak; multipath emitter localization; multipath signal propagation detection; sensor network; sensor nodes; time difference of arrival measurements; Accuracy; Correlation; Delay; Geometry; Position measurement; Time difference of arrival; Vectors;
Conference_Titel :
Sensor Data Fusion: Trends, Solutions, Applications (SDF), 2012 Workshop on
Conference_Location :
Bonn
Print_ISBN :
978-1-4673-3010-7
DOI :
10.1109/SDF.2012.6327914
