An Improved Algebraic Solution for TDOA Localization With Sensor Position Errors

Author

Yang Liu ; Fucheng Guo ; Le Yang ; Wenli Jiang

Author_Institution

Coll. of Electron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha, China

Volume

19

Issue

12

fYear

2015

Firstpage

2218

Lastpage

2221

Abstract

This letter proposes an improved version of the popular two-stage weighted least squares (TSWLS) algorithm for source localization using time difference of arrival (TDOA) measurements in the presence of sensor position errors. The new technique remains to be closed-form and approximately efficient as TSWLS. But it exhibits lower estimation bias and better robustness to increased noise over TSWLS via using a new Stage-2 processing, where the localization error of its Stage-1 is estimated and subtracted from the Stage-1 output to generate the final source position estimate. Simulations corroborate the theoretical developments.

Keywords

least squares approximations; time-of-arrival estimation; Stage-2 processing; TDOA measurements; TSWLS algorithm; estimation bias; final source position estimate; localization error; sensor position errors; source localization; time difference of arrival measurements; two-stage weighted least squares algorithm; Approximation algorithms; Covariance matrices; Estimation; Least squares approximations; Noise measurement; Signal processing algorithms; Performance Analysis; Sensor Position Errors; Source Localization; Source localization; Time Difference of Arrival; performance analysis; sensor position errors; time difference of arrival;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2015.2486769

Filename

7293124