DocumentCode
978576
Title
Robustness of TOA and TDOA Positioning Under Suboptimal Weighting Conditions
Author
Ju-Yong Do ; Rabinowitz, M. ; Enge, Per
Author_Institution
Stanford Univ., Stanford
Volume
43
Issue
3
fYear
2007
fDate
7/1/2007 12:00:00 AM
Firstpage
1177
Lastpage
1180
Abstract
The performance robustness of time of arrival (TOA) and time difference of arrival (TDOA) is evaluated when measurement variances are not accurately known or are approximated. If the actual variances are applied, then TOA and TDOA are known to have equal performance. However, if suboptimal weighting matrices are applied either due to inaccurate knowledge of measurement error statistics or for simplified implementations in practice, there are performance losses proportional to the number of ranging sources.
Keywords
Monte Carlo methods; error statistics; measurement errors; time-of-arrival estimation; suboptimal weighting matrices; time difference of arrival; time of arrival; Covariance matrix; Error analysis; Least squares approximation; Loss measurement; Measurement errors; Performance loss; Position measurement; Robustness; Time difference of arrival; Time measurement;
fLanguage
English
Journal_Title
Aerospace and Electronic Systems, IEEE Transactions on
Publisher
ieee
ISSN
0018-9251
Type
jour
DOI
10.1109/TAES.2007.4383608
Filename
4383608
Link To Document