Browse > Article
http://dx.doi.org/10.7840/kics.2013.38C.2.141

TDoA-Based Practical Localization Using Precision Time-Synchronization  

Kim, Jae-Wan (고려대학교 전자컴퓨터공학과 미래정보망 연구실)
Eom, Doo-Seop (고려대학교 전자컴퓨터공학과 미래정보망 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.38C, no.2, 2013 , pp. 141-154 More about this Journal
Abstract
The technology of precise time-synchronization between signal receive devices for separation distance operation can be a key point for the technology with TDoA-based system. We propose a new method for the higher accuracy of system's time-synchronization in this paper, which uses OCXO and DPLL with high accuracy to achieve phase synchronization at 1 pps (pulse per second) of signal. And the method receive time value from a GPS satellite. Essentially, the performance of GPS with high accuracy refers to long-term frequency stability for its reliability. As per the characteristic, as the GPS timing signals are synchronized continuously, the accuracy of time-synchronization gets improved proportionally. Therefore, if the time synchronization is accomplished, the accuracy of the synchronization can be up to 0.001 ppb (part per billion). Through the improved accuracy of the time-synchronization, the measurement error of TDOA-based location detection technology is evaluated. Consequently, we verify that TDoA-based location measurement error can be greatly improved via using the improved method for time-synchronization error.
Keywords
Localization; Time-Synchronization; TDoA; TPSN; Time Stamping;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 J. Elson and K. Romer, "Wireless sensor networks: a new regime for time synchronization," in Proc. Hot Topics In Networks (HotNets-I), pp. 149-154, Oct. 2002.
2 S. Ganeriwal, R. Kumar, and M. B. Srivastava, "Timing-sync protocol for sensor networks," in Proc. ACM Conf. on Embed. Netw. Sensor Syst. (Sensys), pp. 138-149, 2003.
3 M. L. Sichitiu and C. Veerarittiphan, "Simple, accurate time synchronization for wireless sensor networks," in Proc. IEEE Wirel. Commun. and Netw. Conf., (WCNC), pp. 1266-1273, Mar. 2003.
4 J. Elson, L. Girod, and D. Estrin, "Fine-grained network time synchronization using reference broadcasts," in Proc. Operating Systems Design and Implementation (OSDI), pp. 147-163, Dec. 2002.
5 S. Ganeriwal and M. Srivastava, "Timing-sync protocol for sensor networks," in Proc. ACM Conf. on Embed. Netw. Sensor Syst. (Sensys), pp. 138-149, 2003.
6 S. Ganeriwal, I. Tsigkogiannis, and H. Shim, "Estimating clock uncertainty for efficient duty-cycling in sensor networks," IEEE/ACM Trans. on Netw., vol. 17 no. 3, pp. 843-856, Jun. 2009.
7 B. Ai, Y. Shen, Z. D. Zhong, and B. H. Zhang, "Enhanced sampling clock offset correction based on time domain estimation scheme," IEEE Trans. Consum. Electr., vol. 57, no. 2, pp. 696-704, Apr. 2011.   DOI   ScienceOn
8 H. Kopetz and W. Schwabl, "Global time in distributed real-time systems," Technical Report 15/89, Technische Universitat Wien, Wien Austria, Oct. 1989.
9 P. Ver1ssimo, L. Rodrigues, and A. Casimiro, "Cesiumspray: a precise and accurate global time service for large-scale systems," Technical report. NAV-TR-97-0001, Universidade de Lisboa, 1997.
10 D. Mills, Z. Yang, and T. Marsland (Eds.), Internet Time Synchronization: the Network Time Protocol Global States and Time in Distributed Systems, IEEE Computer Society Press, 1991.
11 H. T. Cho, H. S. Jang, and Y. J. Baek, "Practical localization system for consumer devices using zigbee networks," IEEE Trans. Consum. Electr., vol. 56, no. 3, pp. 696-704, Aug. 2010.
12 T. P. Yunck, W. G. Melbourne, and C. L. Thoenton, "GPS-based satellite tracking system for precise positioning," IEEE Trans. Consum. Electr., vol. GE-23, no. 4, pp. 696-704, Jul. 1985.
13 J. H. Han and D. K. Jeong, "Comparisons of error characteristics between TOA and TDOA positioning," IEEE Trans. Aero. and Elect Syst., vol. 38, no. 1, pp. 307-311, Jan. 2002.   DOI   ScienceOn
14 D. H. Shin and T. K. Sung, "Practical considerations in the design and implementation of time synchronization systems using IEEE 1588," IEEE Trans. Consum. Electr., vol. 47, no. 11, pp. 696-704, Nov. 2009.
15 R. E. Kalman "A new approach to linear filtering and prediction problems," J. of Basic Engineering, no. 82, series. D, pp. 34-45, Mar. 1960.
16 J. H. Hwang and M. S. Yoo, "The analysis on positioning error of recognition schemes of pilot signal in indoor TDoA positioning system using visible light communication", J. KICS, vol. 37B, no. 9, pp. 787-794, Sep. 2012.   과학기술학회마을   DOI   ScienceOn
17 S. Y. Hwang and Y. S. Jung, Y. J. Back, "Reliable time synchronization protocol in sensor networks", J. KICS, vol. 31, no. 3A, pp. 274-281, Mar. 2006.   과학기술학회마을
18 W. H. Jang and Y. M. Kwon, "An improved time synchroniztion algorithm in sensor networks", J. The Institute of Electronics Engineers of Korea (IEEK), vol. 45, no. 9, pp. 13-19, Sep. 2008.