Abstract
A novel non-line-of-sight (NLOS) error identification and range measurement reconstruction algorithm is proposed. First, a NLOS error identification technique is exploited to decide whether there is a NLOS path from the base station (BS) to the mobile station (MS); Second, a biased Kalman filter (KF) is used to mitigate NLOS error in the raw measurements; and then, two measuring points which have maximum residual (so-called the upper dead point and the lower dead point) are investigated to suppress the NLOS error as well as measurement noise. Under the assumption that the NLOS range measurements have been identified, we propose an orthogonal polynomial to smooth the range measurements estimated by KF and a range measurement reconstruction model to suppress NLOS error. Simulations verify its effectiveness to true range reconstruction as well as location tracking in NLOS environment.
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References
Cheung, K.W., So, H.C., Ma, W.K., Chan, Y.T.: Least Squares Algorithms for Time-of-Arrival-Based Mobile Location. IEEE Trans. Signal Process. 52(4), 1121–1130 (2004)
Chen., P.C.: A Non-Line-of-Sight Error Mitigation Algorithm in Location Estimation. In: Proc. IEEE Wireless Communications and Networking Conf. (WCNC), pp. 316–320 (1999)
Wylie, M.P., Holtzman, J.: The Non-Line of Sight Problem in Mobile Location Estimation. Mobile Europe, 827–831 (1995)
Najar, M., Vidal, J.: Kalman Tracking Based on Tdoa for Umts Mobile Location. In: 12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, vol. 1 (2001)
Najar, M., Vidal, J.: Kalman Tracking for Mobile Location in Nlos Situations. In: 14th IEEE Proceedings on Personal, Indoor and Mobile Radio Communications, vol. 3, pp. 2203–2207 (2003)
Lee, C.Y.: Mobile Communications Engineering, ch. 9. McGraw-Hill, New York (1993)
Greenstein, L.J., Erceg, V., Yeh, Y.S., Clark, M.V.: A New Path-Gain/Delay-Spread Propagation Model for Digital Cellular Channels. IEEE Trans. On Vehicular Technology 46, 477–484 (1997)
Silventoinen, M.I., Rantalainen, T.: Mobile Station Emergency Locatingin GSM. In: IEEE International Conference on Personal WirelessCommunications, India (1996)
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© 2009 Springer-Verlag Berlin Heidelberg
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Chen, S., Liu, J., Xue, L. (2009). A Robust Non-Line-Of-Sight Error Mitigation Method in Mobile Position Location. In: Yu, W., He, H., Zhang, N. (eds) Advances in Neural Networks – ISNN 2009. ISNN 2009. Lecture Notes in Computer Science, vol 5553. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-01513-7_18
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DOI: https://doi.org/10.1007/978-3-642-01513-7_18
Publisher Name: Springer, Berlin, Heidelberg
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