Title :
A simple and accurate linear solver for hyperbolic localization
Author :
Wu, Haoyun ; Lu, I-Tai
Author_Institution :
Air Traffic Syst. Div., Sensis Corp., DeWitt, NY, USA
Abstract :
A modified asymptotic linear solver is proposed to estimate emitter locations by solving the intersections of hyperbolas defined by measured time differences of arrivals. The algorithm achieves simplicity and computational efficiency by removing the nonlinearity inherent in hyperbolic localization problems. Off-line parameter optimization is required to minimize the estimation error. Simulation results show that performance of the proposed new algorithm is similar to that of a maximum-likelihood estimator in regions of interest.
Keywords :
maximum likelihood estimation; parameter estimation; signal processing; computational efficiency; emitter location estimation; estimation error minimization; hyperbolic localization; maximum-likelihood estimator; modified asymptotic linear solver; parameter optimization; signal source localization; time difference of arrival; Computational modeling; Equations; Estimation error; Hardware; Iterative methods; Maximum likelihood estimation; Position measurement; Robustness; Time difference of arrival; Time measurement;
Conference_Titel :
Wireless Communications and Networking Conference, 2005 IEEE
Print_ISBN :
0-7803-8966-2
DOI :
10.1109/WCNC.2005.1424774
