Name
Title | ||
|---|---|---|
Enhanced linearized location estimators with optimization-based combinations of radiolocation measurements |
Abstract | ||
|---|---|---|
Popular linearized estimators such as the Extended Kalman Filter (EKF) or the one-step linearized Least Squares (LS) estimator, which have been used for years to solve positioning and tracking problems in location-enabled wireless networks, require that available observations are locally linearized (as functions of estimated variables) around the predicted state or initial optimization guess. In most of practical cases however, using measured radiolocation metrics as direct observations (e.g. Time of Arrival (TOA) or Time Differential of Arrival (TDOA)) might lead to poor linearization conditions and hence alter estimation precision and robustness accordingly. In this paper, we present an optimization-based method that enables to adaptively build quasi-linear observations as combinations of raw measurements. The main idea is to choose the coefficients of the linear combinations that minimize the Mean Square Error (MSE) of location estimators, while taking into account both bias errors due to linearization and measurement noise effects. |
Year | DOI | Venue |
|---|---|---|
2009 | 10.1109/PIMRC.2009.5450351 | PIMRC |
Keywords | Field | DocType |
Kalman filters,least squares approximations,mean square error methods,mobility management (mobile radio),radio direction-finding,time-of-arrival estimation,enhanced linearized location estimators,extended Kalman filter,location-enabled wireless networks,mean square error,measurement noise,one-step linearized least squares estimator,optimization-based combinations,quasi-linear observations,radiolocation measurements,time differential of arrival,time of arrival,Extended Kalman Filter,Least Squares,Linearization,Location and Tracking,Time of Arrival | Least squares,Extended Kalman filter,Computer science,Control theory,Mean squared error,Kalman filter,Radiolocation,Linearization,Time of arrival,Estimator | Conference |
Citations | PageRank | References |
0 | 0.34 | 2 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Joe Youssef | 1 | 7 | 1.37 |
| Benoît Denis | 2 | 148 | 24.30 |
| Christelle Godin | 3 | 27 | 4.80 |
| Suzanne Lesecq | 4 | 111 | 20.60 |