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In this paper, a non-line-of-sight (NLOS) error mitigation on time-difference-of-arrival (TDOA) measurements from pilot signals of a wireless communication network is proposed to solve the positioning and tracking issue involved in the environments where some base stations have NLOS errors. NLOS propagation error occurs when a direct path between a target and a sensor is blocked by some obstacles...
An extended Kalman filter-based interacting multiple model algorithm (IMM-EKF) is proposed for mobile terminal tracking in cellular networks based on time of arrival estimates. The proposed IMM-EKF is able to cope with line-of-sight (LOS) and non-line-of-sight (NLOS) conditions modeled by a Markov chain, where the LOS and NLOS errors are described by different noise models. Road-constraints are included...
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