Application of Energy Efficient Filtering for UWB Indoor Positioning

Nowadays indoor positioning systems (IPS) are quite an intriguing subject of research. Several positioning methods have been evaluated including wireless communications and inertial navigation systems. In particular, UWB systems, with improved stability and precision, that have been developed in recent years pose a good solution for IPS. Although UWB technology provides with great accuracy in Line-Of-Sight (LOS) conditions, it suffers in Non-Line-Of-Sight (NLOS) conditions. Accuracy is also degraded due to signal interference caused by the multipath effect. In this paper a UWB-based localization system is under test in order to evaluate the efficiency of the measurements. A set of position data was acquired in lab environment. Simple filters, in means of computational power, were applied, and the results are compared with the true path. The module deployed (for positioning) in this study is Decawave DWM1001.