Second-Order Cone Relaxation for TOA-Based Source Localization With Unknown Start Transmission Time

Author

Gang Wang ; Shu Cai ; Youming Li ; Ming Jin

Author_Institution

Coll. of Inf. Sci. & Eng., Ningbo Univ., Ningbo, China

Volume

63

Issue

6

fYear

2014

fDate

Jul-14

Firstpage

2973

Lastpage

2977

Abstract

The time-of-arrival (TOA)-based source localization problem with unknown start transmission time is investigated. Without synchronization between the source and the sensors, the TOA measurement model has an unknown start transmission time in addition to the unknown source location. In this paper, we propose two different formulations to jointly estimate the start transmission time and the source location. We then apply the second-order cone relaxation technique to approximately solve the two problems. Simulation results demonstrate that the performance of the proposed methods can be close to the Cramer-Rao bound (CRB).

Keywords

sensors; time-of-arrival estimation; CRB; Cramer-Rao bound; TOA measurement model; TOA-based source localization; second-order cone relaxation technique; sensors; time-of-arrival-based source localization; unknown source location; unknown start transmission time; Approximation methods; Complexity theory; Educational institutions; Noise; Position measurement; Sensors; Time measurement; Localization; second-order cone relaxation; second-order cone relaxation (SOCR); time of arrival (TOA); time-of-arrival;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/TVT.2013.2294452

Filename

6680727