Experimental Evaluation of UWB Local Navigation System Performance Used for Pedestrian and Vehicle Positioning in Outdoor Urban Environments

Currently provision of reliable PNT information in GNSS-challenged conditions is remaining a difficult task because of several factors which have a significant impact on signal propagation and its steady and proper reception such as multipath, attenuation or blockage of the GNSS LOS signal, interference by wide class of signals in GNSS frequency band. To improve the reliability of PNT information in outdoor urban environments, it is proposed to use UWB LNS due to low multipath effect on its signals. For this reason, the main purpose of this work is evaluation of the features of constructing LNS based on UWB signals in urban conditions, as well as comparison of error of navigation solution and plane coordinates based on GNSS and UWB signals. Two experiments described in this paper were conducted. The first experiment was aimed at determining the maximum operating range of UWB LNS, the second experiment was focused on evaluation of UWB LNS performance in outdoor urban environments. In conclusion discussion of obtained results is presented.