Method for direct self-localization of IR UWB node(s) in indoor scenario

A new method for direct self-localization of IR UWB nodes in indoor scenarios is proposed. The localization system consists of a reference node with synchronized spatially distributed antennas that transmit the same UWB impulse sequence used for self-localization. The nodes that perform self-localization have perfect knowledge of antenna locations and UWB impulse waveform. The superposition of the first direct line of sight paths form a known time domain sequence that is location specific. Starting from this fact, a MUSIC-based method for high-resolution direct self-localization is formulated. The proposed method is robust to multipath channels specific for UWB indoor scenarios. The performance of the proposed method is illustrated by results of self-localization of IR UWB node based on the IEEE 802.15.4a standard.