Treffer: Evaluation of UWB techniques for indoor position locationing

Time of Arrival (TOA) is a popular technique used for geolocation. This thesis evaluates the use of TOA techniques indoors. The accuracy of measuring distances using TOA is dependent on the bandwidth of the system and the multipath conditions between the receiver and transmitter. System bandwidth has a significant effect on the TOA measurement. Higher bandwidths provide significantly better performance under certain multipath conditions. While there are many multipath classifications to consider for indoor positioning, we can simplify analysis by considering just the Line of Sight (LOS) and Non-Line of Sight (NLOS) conditions. Based on several measurements performed in the OSU Mixed Signal Labs, a comprehensive analysis of the TOA estimate can be performed by adjusting system bandwidth and testing for LOS or NLOS conditions. Traditional TOA algorithms are also applied to enhance the resolution.