Fundamentals of statistical signal processing: estimation theory
Fundamentals of statistical signal processing: estimation theory
Robust estimator for non-line-of-sight error mitigation in indoor localization
EURASIP Journal on Applied Signal Processing
EURASIP Journal on Advances in Signal Processing
A Survey on Wireless Position Estimation
Wireless Personal Communications: An International Journal
The effect of cooperation on UWB-based positioning systems using experimental data
EURASIP Journal on Advances in Signal Processing
Range-based localization for UWB sensor networks in realistic environments
EURASIP Journal on Wireless Communications and Networking - Special issue on theoretical and algorithmic foundations of wireless ad hoc and sensor networks
NLOS identification and mitigation for localization based on UWB experimental data
IEEE Journal on Selected Areas in Communications - Special issue on simple wireless sensor networking solutions
Indoor geolocation in the absence of direct path
IEEE Wireless Communications
Nonline-of-sight error mitigation in mobile location
IEEE Transactions on Wireless Communications
Indoor geolocation science and technology
IEEE Communications Magazine
A Maximum Likelihood UWB Localization Algorithm Exploiting Knowledge of the Service Area Layout
Wireless Personal Communications: An International Journal
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This paper deals with range-based localization in ultra wideband sensor networks, allowing for the possibility of large range measurement errors because of a failure to detect the direct paths between some nodes. A novel algorithm is proposed that uses only partial knowledge of the service area topology, particularly of the positions of objects which are capable of causing undetected direct path (UDP) propagation conditions. Although the spirit of the proposed approach, because of the lack of information on the range error statistics, is to remove measurements performed under UDP conditions from the computation of the location estimate, these measurements are used implicitly by the algorithm to contribute to the erroneous trial locations being discarded. A cooperative stage is included that allows the probability of localization of a target with an insufficient initial number of accurate range measurements to increase. The proposed algorithm outperforms a variety of alternative positioning techniques, and thus illustrates the capability of this topology knowledge to mitigate the UDP problem, even in the absence of any knowledge about the range error statistics.