An Effective TOA-based Localization Method with Adaptive Bias Computation
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초록
In this paper, we propose an effective time-of-arrival (TOA)-based localization method with adaptive bias computation in indoor environments. The goal of the localization is to estimate an accurate target’s location in wireless localization system. However, in indoor environments, non-line-of-sight (NLOS) errors block the signal propagation between target device and base station. The NLOS errors have significant effects on ranging between two devices for wireless localization. In TOA-based localization, finding the target's location inside the overlapped area in the TOA-circles is difficult. We present an effective localization method using compensated distance with adaptive bias computation. The proposed method is possible for the target's location to estimate an accurate location in the overlapped area using the measured distances with subtracted adaptive bias. Through localization experiments in indoor environments, estimation error is reduced comparing to the conventional localization methods.
Abstract
In this paper, we propose an effective time-of-arrival (TOA)-based localization method with adaptive bias computation in indoor environments. The goal of the localization is to estimate an accurate target’s location in wireless localization system. However, in indoor environments, non-line-of-sight (NLOS) errors block the signal propagation between target device and base station. The NLOS errors have significant effects on ranging between two devices for wireless localization. In TOA-based localization, finding the target's location inside the overlapped area in the TOA-circles is difficult. We present an effective localization method using compensated distance with adaptive bias computation. The proposed method is possible for the target's location to estimate an accurate location in the overlapped area using the measured distances with subtracted adaptive bias. Through localization experiments in indoor environments, estimation error is reduced comparing to the conventional localization methods.
참고문헌 (17)
- Kupper, "Location-based services: fundamentals and operation" (2005), Wiley
- Y. T. Chan, "Time-of-arrival based localization under NLOS conditions", IEEE Transactions on Vehicular Technology, 55(1), pp.17~24 (2006)
- Y. Jiang, "An Asymmetric Double Sided Two-Way Ranging for Crystal Offset", International Symposium on Signals, Systems and Electronics 2007, pp.525~528 (2007)
- L. J. Xing, "Symmetric Double Side Two Way Ranging with Unequal Reply Time", IEEE 66th Vehicular Technology Conference 2007, pp.1980~1983 (2007)
- H. Kim, "Double-sided two-way ranging algorithm to reduce ranging time", IEEE Communications Letters, 13(7), pp.486~488 (2009)
- A. H. Sayed, "Network-based wireless location : challenges faced in developing techniques for accurate wireless location information", IEEE Signal Processing Magazine, 22(4), pp.24~40 (2005)
- I. Guvenc, "A Survey on TOA Based Wireless Localization and NLOS Mitigation Techniques", IEEE Communications Surveys & Tutorials, 11(3), pp.107~124 (2009)
- J. J. Caffery, "Overview of radiolocation in CDMA cellular systems", IEEE Communication Magazine, 36(4), pp.38~45 (1998)
- I. Guvenc, "Analysis of a Linear Least-Squares Localization Technique in LOS and NLOS Environments", IEEE 65th Vehicular Technology Conference 2007, pp.1886~1890 (2007)
- B. T. Sieskul, "Time-of-arrival estimation in path attenuation", IEEE 10th Workshop on Signal Processing Advances in Wireless Communications 2009, pp.573~577 (2009)
- Z. Li, "Robust statistical methods for securing wireless localization in sensor networks", Fourth International Symposium on Information Processing in Sensor Networks 2005, pp.91~98 (2005)
- S. Go, "Improved TOA-based Localization Method using weighting factor in NLOS Environments", Intrernational Conference on Green and Human Information Technology 2015, pp.243~246 (2015)
- B. Lee, "Environmental-Adaptive Bias Calibration in Wireless Localization", IEEE Communications Letters, 17(4), pp.717~720 (2013)
- "IEEE Standard 802.15.4a-2007", 1~203 (2007)
- "ISO", IEC Standard 24730-5, 2010, pp.1~72
- D. Oh, "A Subspace-Based Two-Way Ranging System Using a Chirp Spread Spectrum Modem, Robust to Frequency Offset", IEEE Transactions on Wireless Communications, 11(4), pp.1478~1487 (2012)
- H. Hur, "A Circuit Design for Ranging Measurement Using Chirp Spread Spectrum Waveform", IEEE Sensors Journal, 10(11), pp.1774~1778 (2010)