Accurate time synchronization of ultrasonic TOF measurements in IEEE 802.15.4 based wireless sensor networks

被引：19

作者：

Medina, C.

Segura, J. C. ^{[1
]}

de la Torre, A.

机构：

[1] Univ Granada, ETSI Ingn Informat & Telecomunicac, Dpto Teoria Senal Telemat & Comunicac TSTC, E-18071 Granada, Spain

来源：

AD HOC NETWORKS | 2013年 / 11卷 / 01期

关键词：

Network time synchronization; Ultrasonic pseudorange measurement; Wireless sensor networks; Local positioning systems (LPSs); Time Division Multiple Access (TDMA);

D O I：

10.1016/j.adhoc.2012.07.005

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper discusses the problem of accurate time synchronization of wireless sensor networks (WSNs) used in applications in which a physical phenomenon must be monitored through periodical sampling. In some applications incorrect time synchronization can significantly degrade the system precision. This is for example the case of local positioning systems (LPSs) using ultrasonic time of flight (TOF) measurements for pseudorange estimation. The nodes clock drifts and the random variations of the start time used in each measurement are the two main error sources. In this work a Time Division Multiple Access (TDMA) synchronization algorithm is presented to overcome these problems for WSN using the IEEE 802.15.4 standard. The algorithm is able to compensate for the mentioned error sources in an easy and effective way. Experimental results for an implementation of an ultrasonic pseudorange measurement system between wireless nodes show the effectiveness of the proposed algorithm. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：442 / 452

页数：11

共 23 条

[1]

Alhmiedat Tareq An, 2008, International Journal of Advanced Mechatronic Systems, V1, P63, DOI 10.1504/IJAMECHS.2008.020839

[2]

[Anonymous], 8021542003 IEEE

[3]

[Anonymous], LMC6482IN

[4]

Bahl P., 2000, Proceedings IEEE INFOCOM 2000. Conference on Computer Communications. Nineteenth Annual Joint Conference of the IEEE Computer and Communications Societies (Cat. No.00CH37064), P775, DOI 10.1109/INFCOM.2000.832252

[5] QUADRATURE SAMPLING OF BANDPASS SIGNALS [J].

BROWN, JL .

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, 1979, 15 (03) :366-371

[6]

Brown Jr J.L., 1992, IEEE T INSTRUMENTATI, V42, P93

[7] Performance Evaluation of 3D-LOCUS Advanced Acoustic LPS [J].

Carlos Prieto, Jose ;

Ramon Jimenez, Antonio ;

Guevara, Jorge ;

Ealo, Joao L. ;

Seco, Fernando ;

Roa, Javier O. ;

Ramos, Francisco .

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 2009, 58 (08) :2385-2395

[8] Time of arrival estimation for UWB localizers in realistic environments [J].

Falsi, Chiara ;

Dardari, Davide ;

Mucchi, Lorenzo ;

Win, Moe Z. .

EURASIP JOURNAL ON APPLIED SIGNAL PROCESSING, 2006, 2006 (1)

[9]

González E, 2009, ADV SOFT COMP, V51, P180

[10]

Harter A., 1999, Proc. 5th Annu. ACM/IEEE Int. Conf. Mob. Comput. Netw. (Mobicom 1999), P1

← 1 2 3 →