Semi-parametric geolocation estimation in NLOS environments
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Zoubir, Abdelhak M.
European Association for Signal Processing
The position of a stationary target can be determined using triangulation in combination with time of arrival measurements at several sensors. In urban environments, none-line-of-sight (NLOS) propagation leads to biased time estimation and thus to inaccurate position estimates. Here, a semi-parametric approach is proposed to mitigate the effects of NLOS propagation. The degree of contamination by NLOS components in the observations, which result in asymmetric noise statistics, is determined and incorporated into the estimator. The proposed method is adequate for environments where the NLOS error plays a dominant role and outperforms previous approaches that assume a symmetric noise statistic.
Non-line-of-sight (NLOS) propagation , Transformation-based semi-parametric estimators
U. Hammes, E. Wolsztynski and A.M. Zoubir (2008) ‘Semi-parametric geolocation estimation in NLOS environments’ Proceedings of the 16th European Signal Processing Conference (EUSIPCO 2008), Lausanne, Switzerland, 25-29 August.