ORIENTATION AND LOCALIZATION SYSTEM

摘要

This system comprises: clusters of first nodes (CS1, CS2) for which orientation and localization can be required and at least a node (FN1, FN2,...) called measuring node to determine the relative orientation and localization of said first nodes sharing with it direct lines of sight; Each node having radio station (11, 12, 13...) operating on the base of MIMO process involving various polarizations of the received and transmitted waves at their transmission and reception sides. The radio stations carry out: ° selection of the polarization mode at the transmission side and transmission on the selected polarization mode of a pilot space time bloc codes so that the receiving radio stations can estimate the four polarized MIMO matrices; ° selection the polarization mode at the receiver side and estimation of the four polarized MIMO channel matrices by matching the received space time signal to the transmitted space time bloc; ° estimation independently of the localization and orientation of the first nodes inside each cluster; ° combining the four estimated polarized MIMO channel matrices to remove the contribution of the multi-path signals from the co-polarized MIMO channel matrices; ° using the estimated MIMO channel matrices on the cross polarized channel to estimate the azimuth and elevation angles characterizing the impinging multi-path signals at the receiver side and the azimuth and elevation angles characterizing the outgoing multi-path signals at the transmitter side.