(EN)
A method for determining an error estimate concerning a target device's location. The target device moves and communicates in a wireless environment using signals having at least one measurable signal value. A probabilistic model of the wireless environment indicates a probability distribution for signal values at several sample points in the wireless environment. A set of observations of signal values is made and the target device's location is estimated based on the probabilistic model and the set of observations. The error estimate ( 43 ) is determined as a combination of products over several sample points (SP). Each product comprises a probability distribution ( 41 ) for the sample point in question being the target device's location and a distance function ( 43 ) between the sample point in question and the target device's estimated location.
(ZH) 本发明公开了一种确定目标装置的位置的误差估计的方法。目标装置在无线环境中移动，并使用具有至少一个可测量的信号值的信号通信。无线环境的概率模型表明在无线环境中几个样本点的信号值的概率分布。获得信号值的观测结果集合，并基于所述概率模型和所述观测结果集合估计目标装置的位置。确定误差估计(43)为几个样本点(SP)的乘积的组合，每一个乘积都包括所讨论的样本点是目标装置的位置的概率分布(41)和所讨论的样本点与目标装置的估计位置之间的距离函数(43)。
