Direct positioning with multiple antenna arrays

The introduced system approach for wireless direct positioning with narrowband signals in difficult multipath scenarios is discussed. It is based on multiple distributed antenna arrays and applies covariance based estimators like, e.g. the MUSIC algorithm. The signals emitted from a mobile transmitter are received by multiple partially synchronised antennas arrays. They allow for recording a spatial pseudo-spectrum to be maximized in space. The text refrains from providing a complete theoretical basis, but presents simulation and measurement results for multiple degrees of coherence or synchronicity of the antenna array. The results show that especially the notorious issue of multipath is mitigated. The positioning is demonstrated for the two-dimensional case.