TW-TOA based positioning in the presence of clock imperfections
In: Digital Signal Processing: A Review Journal, Jg. 59 (2016), S. 19-30
Online
unknown
Zugriff:
This manuscript studies the positioning problem based on two-way time-of-arrival (TW-TOA) measurements in semi-asynchronous wireless sensor networks in which the clock of a target node is unsynchronized with the reference time. Since the optimal estimator for this problem involves difficult nonconvex optimization, two suboptimal estimators are proposed based on the squared-range least squares and the least absolute mean of residual errors. We formulated the former approach as an extended general trust region subproblem (EGTR) and propose a simple technique to solve it approximately. The latter approach is formulated as a difference of convex functions programming (DCP), which can be solved using a concave–convex procedure. Simulation results illustrate the high performance of the proposed techniques, especially for the DCP approach.
Titel: |
TW-TOA based positioning in the presence of clock imperfections
|
---|---|
Autor/in / Beteiligte Person: | Gholami, Mohammad Reza ; Gezici, Sinan ; Ström, Erik |
Link: | |
Zeitschrift: | Digital Signal Processing: A Review Journal, Jg. 59 (2016), S. 19-30 |
Veröffentlichung: | 2016 |
Medientyp: | unknown |
ISSN: | 1051-2004 (print) ; 1095-4333 (print) |
DOI: | 10.1016/j.dsp.2016.07.023 |
Schlagwort: |
|
Sonstiges: |
|