Array processing in UWB localization

Author

Pratt, Thomas G. ; Wheeler, Mark L.

Author_Institution

Georgia Inst. of Technol., Atlanta, GA, USA

fYear

2003

fDate

16-19 Nov. 2003

Firstpage

167

Lastpage

171

Abstract

This work explores the utilization of arrays to enhance ultrawideband (UWB) performance in non-line-of-sight (NLOS) environments and to provide range extension through operation in low signal-to-noise ratio (SNR) environments. Processing algorithms are described and evaluated using measured data sets provided by UltRaLab. Array processing is used to excise inconsistent detections and to provide estimates of measurement reliability for use in localization solvers. Angle-of-arrival (AOA)-based metrics are considered for time-of-arrival (TOA) systems, and TOA-based metrics are investigated for time difference-of-arrival (TDOA) systems. General trends suggest that the integration of array processing can significantly enhance performance in non-LOS, low SNR environments.

Keywords

adaptive antenna arrays; array signal processing; broadband networks; indoor radio; SNR; UWB localization; angle-of-arrival -based metrics; array processing; indoor environments; nonline-of-sight environments; signal-to-noise ratio; time difference-of-arrival systems; time-of-arrival systems; Antenna arrays; Antenna measurements; Array signal processing; Degradation; Sensor arrays; Sensor systems; Signal detection; Signal processing algorithms; Signal to noise ratio; Ultra wideband antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultra Wideband Systems and Technologies, 2003 IEEE Conference on

Print_ISBN

0-7803-8187-4

Type

conf

DOI

10.1109/UWBST.2003.1267825

Filename

1267825