Performance Capabilities of UWB Location and Tracking Systems

The theoretical and practical performance limits of a 2-D ultra-wideband impulse-radio localization and tracking system operating in the far field are studied, with estimates of location being based on time-difference-of-arrival (TDOA) measurements. Performance is evaluated in the presence of errors...

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Bibliographic Details
Published in2006 Fortieth Asilomar Conference on Signals, Systems and Computers pp. 564 - 568
Main Authors Rao, D., Barton, R.J.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2006
Subjects
AWGN
Bandwidth
Distortion
Maximum likelihood detection
Maximum likelihood estimation
Radio frequency
Signal resolution
Target tracking
Time difference of arrival
Ultra wideband technology
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Summary:The theoretical and practical performance limits of a 2-D ultra-wideband impulse-radio localization and tracking system operating in the far field are studied, with estimates of location being based on time-difference-of-arrival (TDOA) measurements. Performance is evaluated in the presence of errors in both the TDOA measurements and the sensor locations. The performance of both optimal (maximum-likelihood) and suboptimal location estimation algorithms are studied and compared with the Cramer-Rao lower bound on the variance of unbiased TDOA location estimates. A novel weighted total-least-squares algorithm is introduced that compensates for errors in sensor positions compared with a widely used weighted least-squares approach.
ISBN:9781424407842
1424407842
ISSN:1058-6393
2576-2303
DOI:10.1109/ACSSC.2006.354811