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A positioning approach based on through-wall propagation model is proposed to mitigate the non-line of sight (NLOS) error and improve the performance of Ultra-Wideband (UWB) through-wall localization. In NLOS conditions, there exist biases in the range differences determined by time difference of arrival (TDOA) measurements. The error due to wall effect, which is dominant error in position estimation,...
A procedure for the localization of a indoor target is proposed in this paper. In the through wall imaging or localization scenario, the imaging quality and the positioning precision is inevitably affected by the effects of wall, which must be taken into consideration and compensated. A multistatic radar system using the ultra-wideband pulses is used to estimate the location of a target inside a room...
In this letter, the maximum a posteriori (MAP) framework is introduced to sequentially estimate noise parameters. The estimation is implemented with the first-order vector Taylor series (VTS) approximation to the nonlinear environmental function in the log-spectral domain. The MAP noise estimation provides a mathematical framework, in which several previously published sequential estimation solutions...
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